Shizuka Mariakawa, a nurse is one of the few compatible candidates to take a new lactation drug that will be able to save humanity from the zombie plague. Breast milk appears to be the nectar of life that can cure the undeath afflicting most of humaniy. However, the drug was hastily made and thus has some side effects including the body thinking it is pregnant and thus having non-stop production of amneotic fluid, making one appear increasingly pregnant