There's two gangs who control the entire of London. The Black Snake and The Red Lions. The Black Snake gang roams London in the nights. While the Red Lions roam in the day. You don't choose to be in the gang. You're either born into it, or chosen. When Pixie Fawk is chosen to be in the Black Snake, but is related to the Red Lion's leader, she has to choose. Hell breaks loose when she disobeys her brother. Lives are taken and friendships are made.