Michiru, a female doctor, is in a relationship with Shintaro, the director of the hospital where she works, but cannot control her sexual desire. Then one day, when Shintaro's son Shinichi is hospitalized in an accident, Michiru instinctively seduces Shinichi. Shinichi collapsed helplessly at Michiru's rich and mature beauty. Eventually, the two overcome the taboo of being her father's lover and begin to covet each other..