The targets of the year-end special of the popular "Molestation OK Girls" series are super-hot sisters. The molester has completely locked onto his target, appearing wherever the older sister goes and targeting her body. At first the older sister stubbornly refuses, but when the target shifts to her younger sister, she accepts the molestation while protecting her. Then, her body becomes excited by being molested in public, and she starts to accept the molestation against her will.