Park Sunghoon and Y/n are the DEO’s most lethal operatives—and bitter rivals bound by a shared enemy. Forced to pose as an engaged couple to infiltrate mafia kingpin Bong Woo-Seok, they must confront buried truths: Sunghoon’s corrupt father, Y/n’s mother’s death, and the thin line between hatred and desire. In a world of lies, survival demands intimacy.