Ryuzo Kitajima is an art collector. His collection is cursed, in that it deprives the owner of his right mind and bestows instead evil power and strength. Kasuga sisters, the three daughters of Ryuzo Kitajima, disguised as Night Cats, embark on retrieving the collection to seal off its curse again that was stolen after their parents had been butchered. Ai, the eldest of the sisters, gets trapped and kidnapped by a mad art collector when the 10,000-carat diamond, the Fairy’s Smile, one item of th...