Risa, who had been raising her son Keisuke on her own, married a man with a child when Keisuke entered university and left Risa. For the next three years, Risa had her pussy violated by her husband and her mouth violated by her stepson every day. However, Keisuke got a job offer from a local company and is returning home. Just when Risa thought she could finally live alone with her son, her husband and stepson, who were not happy about it, forced her to offer her only remaining hole, her anus, to Keisuke.