Bethany was born into Candor. But she never felt like she belonged. So when she is forced to choose a faction during the choosing ceremony. She chose what felt right and that was the Dauntless faction. Her whole life is about the change. She changes her name to Bo. She becomes strong. But she also has her eye on a young Dauntless leader. Something about him makes her feel warm and safe. Everything is different and it's for the better.