The Black Jack series is told in short stories. Volume 12 will contain 14 stories, each running approximately 20 pages in length. This eleventh volume includes the following stories:

Wildcat Boy: Black Jack is called out to the jungles of Indonesia to help an old friend with some unique research. Renowned Paris based Professor Dr. Triufeaux has stumbled upon a rare case of a modern day wolf-boy. However, in this case the boy believes he is a wildcat.

White Lion: Whille preparing to have a nice homecooked meal, Black Jack and his assistant Pinoko are interrupted by a wrapping on their front door. Awaiting to enter and speak with the doctor are two men, an odd couple of sorts, with a request for the doc's services. The director of the local zoo and a representative from Angola are desperate to have a recently transplanted animal treated immediately.