What if Tobias not only left his abusive father Marcus but his younger sister Octavia with their abusive father when he was 16 for his ceremony. What happens two years later it's Octavia ceremony and she find out she's divergent but not only divergent the first full divergent of all five faction and she choose dauntless just like her older brother. But she didn't expect to fall in love with her brother enemy who's her leader is after people who are just like her?