Kohata Anime Studio is a place full of dreams where animation is made. Baja was raised in this studio by the people who create animation. Floating in a pond outside are his friends the ducks. One night, when all the people are no longer at the studio, Baja takes a peek outside and finds that his duck friends are being attacked by a cat. Will Baja be able to save his friends? A wondrous night adventure begins.

Black Jack is a master surgeon who possesses impeccable skills, enabling him to perform operations that are impossible for even the finest surgeons. He now is faced with his most difficult task to date and must challenge the limits of medical science...before it's too late!