Journalist Luna once went undercover and fatally shot gang leader Kai. After returning to the city, she is stunned to find him alive and reborn as a wealthy family heir. Fully aware of her undercover identity, Kai coerces Luna with a contract. Unknown to Luna, who has lost her childhood memories, they were once childhood sweethearts. Kai kidnaps her boyfriend to force her to hunt for traitors within the criminal organization. While maneuvering among chaotic forces, they fall into intense love-hate entanglement. Meanwhile, two powerful elite families, Reed and White, engage in brutal business infighting. As Luna tries to use their conflicts to break free, her boyfriend is severely injured in the chaos. In the violent clash, Luna stabs Kai. The story unfolds around undercover missions, cruel family battles, and their tragic, fated love.
