Two Masegaki who were taken by their mother to stay in the countryside for a training camp for the Mama-san Volleyball Club. Seeing moms in bloomers shaking their big tits and practicing volleyball, the children's erotic expectations grow. At the open-air hot spring after practice, the mother who is unprotected naked in front of the child shows her adult mako, and the excited erotic girls demand a double blowjob. The desire to ``I want to have sex with each other's busty mother'' grew, and I pretended to take care of the drunken mother and set up a night to make lewd memories.