A mistress who came from Planet Vizar to hunt for masochists kidnaps a salaryman on his way home and performs a forced feminization surgery on him. Sakuyuki, who was forcibly turned into a new half, is told to become a slave prostitute without even having time to grieve. Sakuyuki, who was seen through for his latent masochism, writhes and cries under Dominas relentless teasing punishment and becomes intoxicated with being abused. Resisting in vain, Sakuyuki, who was trained as a slave pet, falls into a perverted new half who feels pleasure in the anus.