Somewhere in a certain town, there was an adult shop run by a pervert guy who loves crossdressing. Our heroine is a busty short haired girl called Aima, when she was taking stroll around the town she comes across the adult shop. Piqued by her curiosity, she decides to take a look around the shop. Then she finds a costume outside the shop, the costume is somewhat kinda familiar to her. It’s a costume from one of her favorite anime show. Without thinking too much, she decides put on the costume. But she got caught in awkward situation where she encountered a pervert guy crossdressing as a half naked female knight. After the guy witnessed Aima’s boobs, he becomes very excited as if he found an oasis in the middle of desert.