Rui, who has been interested in bondage for a long time, contacted an SM circle through SNS.She will be subjected to her experience bondage in the studio, and will take her best friend Mamiko who she dislikes, but this circle was an extremely dangerous criminal group.In front of her bound Rui, Mamiko was also invited to try it.In front of Mamiko, who was lightly tied up, Rui was forced to drink her aphrodisiac and became strange.Mamiko feels something strange when she sees the scene, but she is too late...