GAJK-004 A high school girl bound and trained in a warehouse, unaware of her parents' secret and her stepfather's transformation. The innocent daughter who fell into the same perversion as her deceased mother, Alice from Toyonaka.

Alice and her father-in-law are saddened by the sudden death of their mother. Her stepfather was a man who remarried her mother when Alice was little, but they got along well like her real parent and child. Six months after her, Alice takes over her mother and spends her days going to school while helping out at her inn. She was gradually returning to her normal life. One day, when she saw her father-in-law going in and out of the storehouse, Alice entered her storehouse, which was forbidden to her. There are many lewd tools that she sees for the first time. While her surprise, confusion and curiosity are mixed, her father-in-law approaches her from behind.