The sons, who have obtained a love potion that will make anyone fall in love with the person who drinks it, use their mother as a test subject to test its effectiveness. However, there is no sign of it taking effect. (What the... it's fake.) Disappointed, they return to their room, but after a while, they start to hear sweet moans. When they timidly peek into the kitchen, they see their mother, her face melting, indulging in masturbation... The shocked sons run over to stop their mother, but the excited mother comes over to them...