Seok-geun is a middle-aged taxi driver who loves his wife but constantly cheats on her. His younger sister Mi-young and her husband Bong-soo live right next door to Seok-geun and his wife, and Bong-soo doesn't understand why his brother-in-law keeps having affairs. However, everything changes when Bong-soo meets Jenny, a woman with irresistible charm.
