There are 12 companion pieces in the forms of "Fact Files" (which expand upon a given character from a corresponding episode) airing shortly after each episode.

The series follows Officer Black Cat's adventures around the forest neighbourhood, apprehending criminals, dealing justice, and solving crimes.

Now there's a mysterious Mask before James Blood, and the man behind it is one that shouldn't exist. What is the mystery surrounding this mask...? So begins an action-packed crime story set in a beautiful city!