Juliet meets Audrey, the leader of five young survivors, who asks Juliet to open the vault so that they can get food.Audrey captured Solo, intending to avenge their lost parents by killing him.Juliet realizes that Solo was just a child when the rebellion occurred, and Solo confessed that he killed Audrey's parents out of self-defense when they broke into the vault.Solo eventually settled with the group, and he allowed everyone to enter the vault.Meanwhile, at Silo 18, Lucas learned that there were 50 more silos, and he headed to the lower floor according to Quinn's letter guidance.Lucas found a tunnel there, and at the entrance of the tunnel, a computer voice warned him not to reveal to anyone what he saw or they would initiate % protection measures.Billings handed over a page of the picture book to Sims, a move that made Camille and Sims consider joining the rebellion.Patrick revealed to Catherine that he suspected that the outside world shown by the silo was just a lie.Bernard blamed Billings for the rebels' actions, but not all senior representatives believed in his words.Bernard secretly listened to Knox and Walker discussing the rebels' plans.