The Totally Ninja Raccoons Discover the Lost World

In The Totally Ninja Raccoons Discover the Lost World, the Ninja Raccoons continue their ninja training, learn the value of art, and discover a hidden passage to a lost world.

The Ninja Raccoons are tricked! Uncle Art is kidnapped! Rascal is hungry! Can the Totally Ninja Raccoons rescue Uncle Art? Will the Ninja Raccoons see daylight again? Will Rascal get his General Tso's chicken?
There are more things in heaven and earth than these three brothers ever dreamed. Cats are trying to take over the world; monsters are real; and Chinese food really will make you hungry soon after you eat it. It's up to the Ninja Raccoons to do something about it.