A couple at risk are attempting something new. 　　Hae-il sleeps with Sook-hee because she charms and seduces him. 　　Poong-cha and In-sook have sex out of habit but without enthusiasm. 　　One day, Poong-cha is driving and gets into an accident with Sook-hee who is walking. Sook-hee falls for the manly Poong-cha and gets away with him far away to have tasty sex. At the same time, Hae-il and In-sook start seeing each other too...