After his mother died, Youngjae, who came to visit his eldest sister's house, who took care of him like his mother, is reunited with her friend Soonae, there after a long time. She is incredibly greedy and charming. The two develop into a secret relationship by the provocation of pure love. One day when he was spending the hot night with her mature lead, her daughter got caught between two people. A young and sexy daughter, an experienced and mature mother, and a man wandering among both of them. An unconventional love triangle begins between the three.