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After an unexpected attack leaves their team reeling, the urgent discussion of a rescue ensues. Mack insists they need Jonas, the only diver capable of the dangerous deep-sea dive to rescue the trapped crew. Despite objections from Dr. Heller and Su Yen—fearing Jonas's mental state after past trauma—Dr. Zhang overrules them, believing Jonas is essential for the mission.
In a poignant scene, the audience sees Jonas now living a reclusive, alcoholic life in Thailand. He initially resists the offer but is ultimately swayed after hearing a recorded message from Lori, his ex-wife, trapped at Mana One. Meanwhile, Su Yen takes matters into her own hands, launching a mini-submersible rescue mission of her own, heightening the drama and tension.