The Astronauts

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

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.

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 hole that is threatening the oxygen supply on the ship 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.

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.

On Day 76, Mission Control implements a new plan of attack: unplugging Matilda from avionic control and transferring it to the ground.