The Runaways are suspicious of Topher, and he tries to prove himself by helping them break into Atlas Academy to get a computer processor that Alex needs. Meanwhile, Gert risks exposing the group to get her anxiety meds, the Yorkes try to determine if their serum against Jonah will work, and Jonah takes Karolina to find out about herself.

After Robert's failed attempt to kill Jonah, the Deans tell Jonah that he'll have to get his own sacrifice. Meanwhile, rifts open up between Chase and Gert, and Nico and Karolina.