This is a story about facing the challenges of a changing era. In a world where martial arts have lost their value due to the arrival of alien technology, martial artists become marginalized.
The protagonist, Blacky, a black cat with a mechanical arm, seeks revenge for his slain master. Determined to confront enemies equipped with alien tech, Blacky uses traditional martial arts. Amidst challenges and obstacles, he strives to find his own worth and redefine the meaning of martial arts in a transforming society.