Her Breast Milk Vaccine

2030 A.D., a deadly infectious disease with a fatality rate if 99% called Morumoru, is a virus that can only infect men. The only preventative measure is maternal breast milk. Sang Gyu and Jeon Seo try to get pregnant but both couples find it hard to conceive. The change their partners to find that chances of pregnancy become high.
(Source: HanCinema)