Beatrice Prior is a member of Abnegation and has lived her whole life being selfless. The next day is her and her brother's Choosing Ceremony.
"I choose Dauntless."
Beatrice has to go with all other sixteen year olds to go and get tested. So she has some knowledge of what faction she is for her choosing ceremony, when shes chosing the path of the rest of her life.
As Beatrice meets with her "nurse", Tori, who is testing her. Tori told her that she is multiple factions, but she cant tell anyone. Tori sends Beatrice out the back door, telling her that she is "sick" and something went wrong.
They are going to start testing people down there.
Beatrice goes into the Choosing Ceremony, where she is confused. As her name is called she chooses Dauntless. As Tris enters Dauntless she cuts her hair and updates her name. She gets assistance from one of her instructors Four. She is not very strong yet but he is helping her get there.
As Tris enters Dauntless she cuts her hair and updates her name. She gets assistance from one of her instructors Four. She is not very strong yet but he is helping her get there.
Tris and Four start working with eachother and building their strengths. They bothh are divergent. Which isnt coming in handy when a powerful women Jenine and one of the Dauntless leaders Eric team up to take down all the divergents in their city.