Tessa Young is an 18 year old college student with a simple life, excellent grades, and a sweet boyfriend. She always has things planned out ahead of time, until she meets a rude boy named Hardin, with too many tattoos and piercings who shatters her plans.

' Both world are cruel, but there are difference. The world that she entered was not a world where slayers kill demons. A world where naked person titans exist, a world where walls is their only protection and soldiers who kill these huge enemies. They are the humanities big enemies, they devour people like demons do. She witness an unbelievable situation and she need to do something to help these humans.'