Tells a story about a retired killer named Bang Ui Gang who gets swept up in a case while using violence to protect an adolescent girl he suddenly becomes in charge of.
Kim Yun Ji is an ordinary high school student, but she has a lot of hidden scars because she has no one she can depend on. After her unexpected meeting with Bang Ui Gang, she will heal some of her inner pain.
Lee Kang To is an ambitious and callous Korean officer employed by the Japanese colonists. Despite his mother's disapproval of his work and his own brother's antagonistic history with the Japanese, Kang To continues to play by the colonist's rules in hopes of becoming successful and bringing his family out of poverty. However, a mysterious figure wearing a traditional Bridal Mask always seems to get in Kang To's way. The Bridal Mask appears as a Zorro-like figure who protects the people from the Japanese colonists' oppression and abuse of power. An unexpected turn events brings Kang To to cross paths with the mysterious Bridal Mask, changing his future and the nation's history forever.
Based on the hit manhwa series of the same name.