Alto, a young boy, has a unique and special skill called "Ejaculation Technique." He has manifested the special power to turn his ejaculated semen into any kind of medicine. Elsa, a prostitute, comes to recruit him to become a state-employed "Ejaculation Master." "If you can fill these 10 bottles with semen, you'll become an Ejaculation Master." Alto has a strong dream of becoming an adventurer, but the voluptuous and lewd Elsa in front of him...