The story begins three days after the assault on the Abnegation faction by Erudite leader Jeanine’s mind-controlled Dauntless soldiers. Dauntless leader Eric and his platoon search through the wreckage of Abnegation for a box of unknown origin that contains the symbols for each faction. They recover the box and take it to Erudite. Jeanine claims it contains data from the city’s founders and the means to end the Divergence problem–the issue of individuals having the qualities of multiple factions. Only a Divergent can open the box, so she orders all Divergents hunted down and captured. Tris, Four, Peter, and Caleb hide within the Amity compound. Soon after, Eric and his fleet arrive to test all the occupants for Divergence. Peter gives up the group’s location as Tris, Four, and Caleb escape and board a train headed into Factionless territory. A fight ensues with the Factionless aboard the train. Four reveals his true name, Tobias Eaton, to the Factionless, who reply that they have been searching for him. Four, Tris and Caleb are given safe passage into the heart of Factionless. There, Tris and Caleb discover that Factionless’ leader is Four’s mother, Evelyn Johnson-Eaton. Evelyn suggests that Dauntless and Factionless should join their forces against Erudite. The next morning, the three leave Factionless for Candor to meet up with the remaining Dauntless. During the trek, Caleb tells Tris that he cannot continue with them and goes in a different direction.