Mika Amari, the stepdaughter of her new stepfather, moves in and he begins to enjoy peaceful days. However, this tranquility doesn't last long. Mika gradually reveals her true nature, aggressively seducing him. She brushes against him, touching his skin, behaving like a temptress. As a man experiencing life with a teenage girl for the first time, he finds himself unable to scold her firmly. Then, on his birthday, Mika gives him a shocking gift—one that will profoundly change his heart forever.