divergent secret high

Tris moves to a new school, finds a group of friends when a storm of drastic violence hits her, and her friends. They know it's no ordinary coincidence. When Four's long lost sister arrives back at his home, she releases wall-breaking information. Two people of the enemy Gang are identified, the third may stay hidden. However, the gang is after 30 teens in Chicago. But for what reason?
CANCELLED after 50 chapters or so.