​Dr. Narutaki, a brilliant genius with a mission to restore the true essence of Japanese men, faces a daunting challenge. To accomplish his goal, he requires 100 semen samples but encounters resistance from the unwilling participants. Determined to overcome this obstacle, he devises a plan that involves Marin, a seductive student from an all-girls institution. Donning a special costume that fulfills men’s desires, Marin embarks on a quest to collect the required samples. However, complications arise when Southpole One, a sexaroid created by the doctor’s assistant, intervenes by extracting semen from men before Marin can. Thus begins a thrilling race to secure the future of Japan through the acquisition of vital semen.​