A tough, career-driven female investigator who has gone three years without sex must pose as a married couple with her younger male colleague for an undercover operation. Their assigned apartment is right next door to a gangster, so they begin a fake newlywed life to keep their identities hidden. What starts as intimacy performed strictly for the mission gradually shakes her resolve, and over the course of a week the hardened investigator falls genuinely in love with her junior partner.