Emi raised her son as a single mother, and when her son got a job, he started living on his own.When she graduates from school and she leaves home, she feels lonely for her son, so she decides to go on a hot spring trip with him to make some memories for her.Emi tries to change into a yukata, but her son helps her change clothes...The son buries his face in his mother's voluptuous breasts, saying, ``I love you...'' Emi is confused by the sudden confession, but as a woman, he doesn't want to end it just yet... A story of a father and son who suck their cock in their mouths and experience the pleasure of forbidden incest over and over again.