Hosoda, a mediocre part-time security guard, enjoys gazing at a mysterious beauty named Erika who appears on his way to work. One day, Hosoda is treated badly at work and feels annoyed, so he tails Erika. When he peeks into the building where Erika has entered, he sees her engaging in lewd acts with some men... In fact, Erika is a natural sex doll girl who does whatever the men who approach her tell her to have sex with them! #YoroP