Tris Prior resides in a frightening modern version of the world where the general society is separated into five different factions in the movie Divergent. When every individual becomes an adult, each must select a certain faction that they must dedicate their selves to. It is Dauntless that Tris chooses for herself which is described to be for those people who aim for courage above any other thing.
However, during the process of her initiation, she discovers a huge revelation that she is of a different kind. That unlike other people, she is called a Divergent, one who can fit into more than just a single faction. She is then warned by authorities to never reveal her identity but later on unveils a threatening war that will put even the lives of her loved ones in danger.
During the day of the execution of the Abnegations, Tris needed to mix herself in so as to avoid anyone getting suspicious about her since all divergents are not affected by the new serum. She then stumbles upon Four who told her that he himself is a Divergent too. They both move away from the group and searched for parents of Tris. They were captured by Eric, a leader of the Dauntless who puts Four to custody and sends the order of Tris’ execution.
Tris is saved eventually by her mother Natalie but was shot during the time of their escape. Her father sacrificed himself as well in one of the shootouts while Tries moves on alone to search for Four. When she found him, she used all her skills and knowledge to awaken Four from a severe mind control and succeeds.
Finally, Tris used the mind control serum to Jeanine, a leader of the Erudites to cancel the program of the Abnegations’ execution. She succeeded and ran away from the compound and boarded a train with the rest of the group.