Five untrained kids are accidentally sent into orbit when an AI-controlled spacecraft launches prematurely. The group must take control of the ship, and work as astronauts when they face a harrowing emergency onboard.

Tension on the ship rises as Elliott plants seeds of distrust about Will, whom Elliott suspects is collecting mission information for his reporter mother. Meanwhile, Samy works with Matilda's inventor to probe the AI's role in the accidental launch.