A hard-working househusband and a former special forces officer Gang-mu is hiding his past from his wife Mi-sun who is a violent crime detective. One day, a mysterious woman, Hee-ju appears to Gang-mu and Mi-sun assumes that his husband is having an affair. Mi-sun is after Gang-mu and Gang-mu is after something else. It eventually leads both of them to unexpected situations! Gang-mu can no longer be a peaceful househusband after all…!