Woo-yeol's friend, Do-jin, secretly enjoys a relationship with Woo-yeol's stepmother, Chae-dam. Do-jin enters the house while the superiority and inferiority are gone and has sex with her stepmother. Do-jin's wife, Nara, learns from Chae-dam how to excite a man...

Kim Hak-cheol is a trashy husband who sends his wife Jin Joo-hee to his friend Kang Min-hyeok as a housekeeper due to gambling debts. He visits his wife once in a while and steals money. He borrows money from Min-hyeok, a golden spooner who is Hak-cheol's friend, on the condition that Joo-hee is sent as a housekeeper. Min-hyeok is kind to his friend's wife, Joo-hee. Over time, the true colors begin to emerge. Meanwhile, Min-hyeok's wife, Nam Gyoo-ri, lives together with them without knowing anything about Joo-hee.