A close-knit mother and son pair challenge a ridiculous erotic project for the prize money! If the son gets an erection, not only will they not get the prize money, but the mother will also have sex in front of him. Despite this perverted rule, the mother confidently says 'My son will be fine' with no basis at all! How will their fate unfold as they face game after game guaranteed to cause erections? Even incest appears?!
