Three sisters, Hitomi, Rui, and Ai, run a café but moonlight as the art thief trio "Cat's Eye". They steal paintings, leaving clues to find their missing artist father from the Nazi era. Hitomi's fiancé Toshi, a cop, vows to catch them.

The three Kisugi sisters Hitomi, Rui and Ai, who run a café called Cat's Eye. The same sisters lead a double-life as a trio of highly skilled art thieves, leaving cards with a name 'Cat's Eye' at the scene of the crime. They steal works of art (mostly paintings) as clues that belongs to their long missing father- Heinz, a famous painter and art collector during the Nazi's reign. They hope by stealing his works, Heinz will contact them. Toshi, the police officer investigating this case is the fiancé of Hitomi. He also swears to capture and bring down the Cat's Eye Gang.