en Cuevana 3. On his way to work, Sang-hyun accidentally meets his childhood friend Hyun-joo. They meet again soon, fall in love, and a few days later go to say hello to Hyun-joo's house. Hyun-joo's mother Hye-jin, whom Sang-hyun met there, was very young and beautiful. Sanghyun gradually falls into Hyejin's strong charm...