An unexpected development prompts doubts among the kids about returning home, and an unknown threat attempts to destroy the Odyssey before the astronauts can make their next move.

Mission Control failed to transfer control to the ground, which means the kids are now driving the space craft. With only one day of training, the kids must steer a spacecraft into Venus's orbit without it burning up in the planet's atmosphere.

Mission Control implements a new plan of attack: unplugging Matilda from avionic control and transferring it to the ground. In the middle of this task, Samy has to undergo emergency surgery without the aid of a medical professional onboard.

With morale at an all-time low, Elliot takes it upon himself to rally the group with a team-building exercise involving using a high-tech camera to make a movie.

A small hole in the ship threatening the oxygen supply can only be repaired from the outside; Martin is forced to become the first kid to ever attempt a spacewalk as he is the only one who can fix it.

Mission Control uploads a virus onto the Odyssey in an attempt to take control; Matilda fights back by shutting everything down, and the true vulnerabilities of the kids comes to light.

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.

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.

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.

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.