Exhibit 2.1

EXECUTION VERSION

AMENDMENT NO. 1 TO THE BUSINESS COMBINATION AGREEMENT, dated as of April 11, 2024 (“Amendment No. 1”), by and among Screaming Eagle Acquisition Corp., a Cayman Islands exempted company, SEAC II Corp., a Cayman Islands exempted company, SEAC MergerCo, a Cayman Islands exempted company, 1455941 B.C. Unlimited Liability Company, a British Columbia unlimited liability company, Lions Gate Entertainment Corp., a British Columbia corporation, LG Sirius Holdings ULC, a British Columbia unlimited liability company and LG Orion Holdings ULC, a British Columbia unlimited liability company (collectively, the “Parties”). Capitalized terms not defined herein shall have the meaning given to them in the Business Combination Agreement (as defined below).

WHEREAS, the Parties entered into that certain Business Combination Agreement dated as of December 22, 2023 (the “Business Combination Agreement”);

WHEREAS, Section 9.14 of the Business Combination Agreement provides that the Business Combination Agreement may not be amended except by an instrument in writing signed by each of the Parties; and

WHEREAS, the Parties desire to amend certain provisions of the Business Combination Agreement.

NOW, THEREFORE, in consideration of the premises and the mutual promises set forth herein and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties, each intending to be legally bound, hereby agree as follows:

WHEREAS, contemporaneously with the execution of this Agreement or otherwise prior to the Closing, certain investors (the “PIPE Investors”) have entered into subscription agreements in substantially the form and on the terms attached hereto as Exhibit A (collectively, the “Subscription Agreements”), pursuant to which, as of April 11, 2024, such investors have agreed, subject to the terms and conditions set forth therein, to subscribe for and purchase, immediately following the StudioCo Amalgamation, PubCo Common Shares for an aggregate cash amount of $225,000,000 (such aggregate cash amount, the “PIPE Investment Amount,” and such transactions, the “PIPE Investment”);

WHEREAS, prior to the Closing, subject to the terms and conditions of this Agreement, SEAC and certain SEAC Shareholders who are not PIPE Investors or Discounted Non-Redemption Investors (the “Non-Redemption Shareholders”) may enter into one or more non-redemption agreements in the form reasonably acceptable to SEAC and LG Parent (the “Non-Redemption Agreements”), pursuant to which, among other things, such Non-Redemption Shareholders will agree not to redeem or transfer all or a portion of their respective SEAC Class A Ordinary Shares (such shares subject to the Non-Redemption Agreements and that are not redeemed or transferred by the applicable Non-Redemption Shareholder prior to the SEAC Merger Effective Time, the “Non-Redemption Agreement Shares”);

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WHEREAS, one (1) Business Day prior to the Closing Date (which shall also be the calendar day immediately prior to the Closing Date), immediately prior to the Class B Conversion and subject to the terms and conditions of this Agreement, (i) each then issued and outstanding SEAC Class B Ordinary Share (and each then issued and outstanding SEAC Class A Ordinary Share that was formerly a SEAC Class B Ordinary Share, if any (the “Former SEAC Founder Shares”)) held by the Sponsor, or any of its Affiliates or permitted transferees under the Sponsor Support Agreement, in excess of 1,800,000 SEAC Class B Ordinary Shares (such 1,800,000 number calculated by including Former SEAC Founder Shares (if any)), and excluding, for the avoidance of doubt, 210,000 SEAC Class B Ordinary Shares currently held by the Sponsor that it expects to transfer to SEAC’s independent directors and certain SEAC officers and advisors prior to the Closing, shall be repurchased by SEAC for an aggregate price consisting of (A) $1.00 and (B) the SEAC Sponsor Options (the “Sponsor Repurchase”) pursuant to a repurchase agreement substantially in the form attached hereto as Exhibit G; and (ii) the Sponsor shall receive the SEAC Sponsor Options, and SEAC and Sponsor shall enter into the Sponsor Option Agreement, in each case upon and subject to the other terms and conditions set forth in this Agreement and in accordance with the provisions of applicable Law;

WHEREAS, one (1) Business Day prior to the Closing Date (which shall also be the calendar day immediately prior to the Closing Date), immediately following the Sponsor Repurchase and prior to the SEAC Merger and subject to the terms and conditions of this Agreement, 2,010,000 of the SEAC Class B Ordinary Shares (such 2,010,000 number calculated by including Former SEAC Founder Shares (if any)) then issued and outstanding shall automatically convert, on a one-for-one basis, into a SEAC Class A Ordinary Share, pursuant to the SEAC Articles, and any SEAC Class B Ordinary Shares and Former SEAC Founder Shares that collectively exceed 2,010,000 and that remain (if any) shall be surrendered and canceled for no consideration pursuant to a surrender letter (the “Class B Conversion”);

WHEREAS, subject to the terms and conditions of this Agreement, (i) in connection with the SEAC Merger, each then issued and outstanding Class A ordinary share in the authorized share capital of SEAC (the “SEAC Class A Ordinary Shares”) (including those resulting from the Unit Separation and the Class B Conversion) shall be exchanged for one (1) Class A ordinary share in the authorized share capital of New SEAC (the “New SEAC Class A Ordinary Shares”), (ii) as of the SEAC Merger Effective Time, the memorandum and articles of association of New SEAC will be the memorandum and articles of association in the form reasonably acceptable to SEAC and LG Parent (the “New SEAC Articles”), (iii) as of the SEAC Merger Effective Time, the officers and directors of SEAC shall become the officers and directors of New SEAC, in each case upon and subject to the other terms and conditions set forth in this Agreement and in accordance with the provisions of applicable Law, and (iv) as of the SEAC Merger Effective Time, each SEAC Sponsor Option that is issued and outstanding immediately prior to the SEAC Merger Effective Time will convert automatically, on a one-for-one basis, into an option to purchase New SEAC Class A Ordinary Shares (the “New SEAC (Cayman) Sponsor Option”);

“Deferred Underwriting Fees” means (A) the lower of (i) 3.5% multiplied by the Minimum Trust Proceeds and (ii) the amount of deferred underwriting fees held in the Trust Account and payable to the underwriters of SEAC’s initial public offering upon consummation of the Transactions in accordance with the terms of the Underwriting Agreement, dated as of January 5, 2022, by and between SEAC and Citigroup Global Markets Inc. and Goldman Sachs & Co. LLC, as representatives for the underwriters named therein, or (B) as otherwise agreed between SEAC, on the one hand, and Citigroup Global Markets Inc. or Goldman Sachs & Co. LLC, respectively, on the other hand, with LG Parent’s prior written consent for any such agreements entered into after April 11, 2024.

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“SEAC Shareholder Consideration” means the aggregate PubCo Common Shares to be issued in exchange for SEAC Amalco Common Shares pursuant to the StudioCo Amalgamation and in accordance with the Plan of Arrangement (which PubCo Common Shares, for the avoidance of doubt, will include the SEAC Merger Consideration as converted into or exchanged for PubCo Common Shares in accordance with the terms of this Agreement).

(ii) On the terms and subject to the conditions set forth in this Agreement, one (1) Business Day prior to the Closing Date (which shall also be the calendar day immediately prior to the Closing Date), immediately following the Sponsor Repurchase and prior to the SEAC Merger, pursuant to the SEAC Organizational Documents and without any action on the part of any Party or any other Person, 2,010,000 SEAC Class B Ordinary Shares (other than the SEAC Class B Ordinary Shares cancelled and extinguished pursuant to Section 2.08(g)(i), and such 2,010,000 number calculated by including Former SEAC Founder Shares (if any)) shall each automatically convert into one (1) SEAC Class A Ordinary Share, and any SEAC Class B Ordinary Shares and Former SEAC Founder Shares that collectively exceed 2,010,000 and that remain (if any) shall be cancelled and extinguished in accordance with the SEAC Organizational Documents in the Class B Conversion.

(viii) At the SEAC Merger Effective Time, by virtue of the SEAC Merger and without any action on the part of any Party or any other Person:

(ix) Notwithstanding anything to the contrary in this Agreement or any other Transaction Document:

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(a) Prior to the SEAC Merger Effective Time, StudioCo shall appoint Continental Stock Transfer & Trust Company (or such other exchange and paying agent reasonably acceptable to SEAC) (the “Exchange Agent”), for the purpose of delivering to each SEAC Shareholder his, her or its portion of the SEAC Shareholder Consideration in respect of his, her or its SEAC Class A Ordinary Shares and SEAC Amalco Common Shares, as applicable. Upon the StudioCo Amalgamation Effective Time, PubCo shall issue the number of shares of PubCo Common Shares (as uncertificated shares pursuant to the BC Act) issuable in connection with the SEAC Shareholder Consideration (such shares, collectively, the “Exchange Fund”).

(d) All securities issued upon the exchange of any SEAC Ordinary Shares in the SEAC Merger or the Domestications and the terms hereof shall be deemed to have been issued and paid, as applicable, in full satisfaction of all rights pertaining to such SEAC Ordinary Shares.

(f) Any portion of the Exchange Fund that remains undistributed to SEAC Shareholders with respect to the SEAC Shareholder Consideration for twelve (12) months after the StudioCo Amalgamation Effective Time shall be delivered to PubCo, to be held for the benefit of the SEAC Shareholders, and any SEAC Shareholders who have not theretofore complied with this Section 2.09 shall thereafter look only to PubCo for the SEAC Shareholder Consideration. Any portion of the Exchange Fund with respect to the SEAC Shareholder Consideration remaining undistributed to SEAC Shareholders, as may be applicable, as of a date which is immediately prior to such time as such amounts would otherwise escheat to or become property of any government entity shall, to the extent permitted by applicable Law, become the property of PubCo free and clear of any claims or interest of any Person previously entitled thereto.

(g) None of the Exchange Agent, PubCo, SEAC, LG Parent, StudioCo, Studio HoldCo or any of their respective Affiliates shall be liable to any SEAC Shareholder for any SEAC Class A Ordinary Share that is subsequently deemed to be cancelled in connection with the Transactions (or dividends or distributions with respect thereto) or is otherwise delivered to a public official pursuant to any abandoned property, escheat or similar Law in accordance with this Section 2.09.

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As of April 11, 2024, SEAC has a total of approximately $184,377,982 in the Trust Account.

provided, that LG Parent shall be deemed to have consented in writing if it provides no response within five (5) Business Days after SEAC has made a request for such consent in writing:

(i) amend, restate, supplement or otherwise change the SEAC Organizational Documents or the SEAC Entities Organizational Documents;

(iii) (1) declare, set aside, make or pay any dividend or other distribution, payable in cash, stock, property or otherwise, with respect to any of its Equity Interests, other than redemptions from the funds in the Trust Account that are required pursuant to the SEAC Organizational Documents or (2) consent to, approve or otherwise facilitate any reversal or withdrawal of a redemption from the Trust Account that would cause the Aggregate Transaction Proceeds to exceed $409,500,000;

The representations and warranties of SEAC contained in (x) Section 4.01, Section 4.02, Section 4.03(d), Section 4.04, Section 4.08(b)(i), Section 4.10 and Section 4.11 shall each be true and correct (without giving effect to any “materiality,” “material adverse effect” or similar qualifiers contained in any such representations and warranties) in all material respects as of the date hereof and as of the consummation of the SEAC Pre-Arrangement Steps as though made on and as of such date and time (except to the extent of any changes that reflect actions expressly permitted in accordance with Section 5.02 of this Agreement and except to the extent that any such representation or warranty expressly is made as of an earlier date, in which case such representation and warranty shall be true and correct as of such specified date), (y) Section 4.03(a), Section 4.03(b), Section 4.03(c), Section 4.08(a), Section 4.08(b)(ii) and Section 4.12 (solely with respect to the second sentence) shall each be true and correct in all respects except for de minimis inaccuracies as of the date hereof and as of the consummation of the SEAC Pre-Arrangement Steps as though made on and as of such date and time (except to the extent of any changes that reflect actions expressly permitted in accordance with Section 5.02 of this Agreement and except to the extent that any such representation or warranty expressly is made as of an earlier date (or later date with respect to the second sentence in Section 4.12), in which case such representation and warranty shall be true and correct as of such specified date) and (z) the other provisions of Article IV shall be true and correct in all respects (without giving effect to any “materiality” or similar qualifiers contained in any such representations and warranties) as of the date hereof and as of the consummation of the SEAC Pre-Arrangement Steps as though made on and as of such date and time (except to the extent that any such representation or warranty expressly is made as of an earlier date, in which case such representation and warranty shall be true and correct in all respects (without giving effect to any “materiality” or similar qualifiers contained in any such representations and warranties) as of such earlier date), except in the case of this clause (z) where the failures of any such representations and warranties to be so true and correct in all respects (without giving effect to any “materiality” or similar qualifiers contained in any such representations and warranties), individually or in the aggregate, would not reasonably be expected to have a material adverse effect on the ability of SEAC or the SEAC Entities to consummate the Transactions.

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(e) Aggregate Transaction Proceeds. The Aggregate Transaction Proceeds (for the avoidance of doubt, before payment of Transaction Expenses or any amounts payable pursuant to the SEAC Public Warrant Exchange) shall be equal to an amount no less than $350,000,000 and no greater than $409,500,000, or a greater amount as approved by each of SEAC and LG Parent, with at least $125,000,000 of which being held in the Trust Account (such $125,000,000 requirement to be reduced dollar for dollar for any additional PIPE Investment Amount received (or deemed received (including upon the initiation by the applicable PIPE Investor of a cash wire transfer to the account specified in the Closing Notice (as defined in the PIPE Subscription Agreement)) pursuant to any additional Subscription Agreements entered into from April 11, 2024 and the Closing in accordance with Section 6.17) (such $125,000,000 amount, as adjusted pursuant to the immediately preceding parenthetical, or such greater amount as approved by each of SEAC and LG Parent (in each of their sole discretion) the “Minimum Trust Proceeds”).

[Signature Page Follows]

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IN WITNESS WHEREOF, the Parties have duly executed this Agreement as of the date first above written.

[Signature Page to Amendment No. 1 to the BCA]

[Signature Page to Amendment No. 1 to the BCA]

Annex A

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Annex B

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