Once a roller coasters designer, Seok Geun is now a middle-aged taxi driver living in Jeju Island. Even though he still loves his wife, he regularly cheats on her. While his sister Mi Yeong owns a restaurant and is married to the serious Bong Soo, who remains faithful, despite the temptations surrounding him. With the couple's restaurant going through a slump, much like their sex life, Geun suggests to Soo that having an affair could solve his woes in the bedroom. Soo doesn't get his brother-in-law's lifestyle until he meets his misères, Je Ni. (Source: MyDramaList)