The film is set almost entirely aboard Icarus, a spacecraft bound for the sun. The crew has been tasked with restarting the dying celestial body by launching a giant bomb into it—“creating a star within a star.” Their mission unfolds as a daisy chain of breathless cliffhangers. Just about all of them are the products of human error; the decision to drift off course and rendezvous with the first ship sent to accomplish their task creates a domino effect of miscalculations, moral dilemmas, daunting obstacles, and impossible decisions.
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