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.

A small toy clogging the toilet leaves only one working bathroom; the kids work together to dislodge the toy; on Earth, tempers flare between the parents while Matilda's inventor devises a bold plan to hijack the AI.