As the world begins to discover the existance of parasytes. The parasytes living in human bodies must be even more careful not to get revealed. Caught in the midst of it is Shinichi Izumi and his parasyte Migi, the duo must face the daunting challenge of going against Goto, the bodyguard of mysterious mayor candidate Takashi Hirokawa both whom have long passed and his body is made of a mass of parasytes bent on taking over the world. Meanwhile, other parasytes such as Ryoko Tamiya learn what it means to be human and try to raise a child born from the host she is residing in.