Arisa works a quiet life as a waitress at a café, but she harbors a secret identity as Shadow Cat, the notorious phantom thief. Her transformation is powered by magical eyeshadow, granting her the ability to steal and seal gems possessed by demons. One day, a mysterious man with a demonic aura appears at her workplace. Arisa investigates and discovers he is a doctor conducting dangerous research on demons. She sneaks into his lab but falls into a trap, her body violated and forced to retreat. Later, the doctor attacks her café and captures Arisa herself. After a fierce battle, she manages to turn the tables and exact revenge, vowing to storm the doctor's laboratory once again. [HAPPY END]