The CEO of a famous motorcycle company is shot dead. The alleged killer seems to be his brother. The only heir, Sophy, runs away as she is forced to give up on her rights. She collides with Bo, an amnesiac orphan, who she asks for help when she sees his martial arts skills. Bo refuses any involvement; until his foster mother is murdered. Sophy's family holds the key to a past Bo cannot remember, and the lives of all those involved are now in danger.—Lee Soo-Jun