Once upon a time, the second generation Momotaro went out to exterminate the demon girl and went missing. Momotaro's younger sister, Momoko, who is the last successor to the Momotaro clan, is still lacking in power as the third generation Momotaro. Even today, instead of not being able to receive the annual tribute, it is pacoed by the demons and vaginal cum shot is made. During that time, the second generation Momotaro, who was brainwashed by the demons, was also raped. Momoko decides to regain her brother and heads for the decisive battle by training her dick to squeeze the source of power of the demons, "energetic".