The Ilea approaches Amalthea, and Petra predicts a failure of the radiation shield in the upper quadrant of the Dome. Finbow calls for an evacuation. Chac remains in the Dome and Finbow dons a spacesuit to rescue him. has to be rescued. Mercedes suggests keeping the rotational plane of the Dome away from Jupiter until they are sheltered by Amalthea. Cats thinks this is reckless, and storms off the bridge when Brelan supports her plan. Melody and Sara struggle with their waitressing jobs. Piers instructs Fiona to go to Mars with Timmy.