Justice City. Rain soaks its streets. Crime soaks it more. The fate of the entire city has been left in the hands (well, paws) of one brave superhero.

That's right - dun dun dunnnnnn - INVISIDOG!

Invisidog hunts for danger wherever he finds it. There is no job too big, and no criminal too tough for the mighty Invisidog. He is the shadows!! And actually, that's kind of the problem. Because Invisidog's amazing superpowers . . . are kind of rubbish.

Turns out being invisible isn't all that helpful when you're trying to rid a city of terrible criminals. They tend to have a habit of ignoring you for one thing. So Invisidog's going to have to think BIG. Can he convince the most amazing superheroes of all time - adorable-but-mighty Quack Attack, and the world's greatest thinker, Detective Octopus - to join forces?