Her son, Kosuke, who had natuko, who had a good hand, was well married. However, Kosuke who had a secret yearning for mother did not shake the feeling until the end... On the eve of the wedding, I told my final life to Kosuke, who was troubled by the new life, and said, "I want both to be happy". Kosuke who remembered the climax for free love continues to continue the fierce excitement to the pleasure to taste for the first time. And mother and son who put out hand to forbidden love was caught by the vortex of desire only...