Once known as the "Lucky Black Bee," the skilled female mercenary Bee finds herself approached by Meg, the daughter of a former colleague she had feelings for, who requests her to be her bodyguard. Reluctantly, Bee takes on the role of protecting Meg, but soon a man appears who is intent on taking Meg's life. To make matters worse, a new Queen threatens Meg as well. Can Bee protect the one she holds dear?