Hanzo Hasashi loses his clan, family, and his life during an attack by a rival ninja clan. He is given the chance to compete in an interdimensional tournament to save his loved ones. Hanzo Hasashi, the grandmaster of a ninja clan, is ambushed by his rivals, who kill his loved ones. Later, he decides to participate in a special tournament in order to exact revenge on the culprits.

The plot revolves around a teenage girl named Clary Fray, who begins to see a world she never knew existed. After a series of events, she meets with the mysterious Shadowhunters, who are a group of demon hunters. Together, they try to figure out what is going on with Clary and why she can suddenly see their world.