Based on the game by TinkerBell. Saeko is introduced to an online sex shop by her co-worker, Sayaka. Curiosity gets the best of her, and she orders a small vibrator for herself. After discovering the pleasures that sex toys bring her, she becomes addicted to masturbation and finds herself doing it all the time. Soon enough, Sayaka joins her in her sex escapades, and things start to escalate to new heights.