Grieving the loss of a best friend she couldn’t protect, an ex-bodyguard sets out to fulfill her dear friend’s last wish: sweet revenge. Grieving the loss of a best friend she couldn’t protect, ex-bodyguard Ok-ju sets out to fulfill her dear friend’s last wish: sweet, sweet revenge. Ok Ju used to work as a bodyguard. She excels in physical activities like martial arts, sword fighting, gunmanship, and motorcyle riding. Ok Ju is friends with Min Hee, who is a ballerina. Min Hee asks Ok Ju for a favor. She wants Ok Ju to take revenge on Pro Choi. Ok Ju soon risks her life for Min Hee.