Rainbowie is being hunted down by a gang of biker fish that have taken over the town. Rainbowie must team up with friends from the past to stop this gang from destroying the sea.

Rainbowie tags along with a group of strangers as they plan to spend the weekend in a cabin in the woods. But what they didn't expect to find was a book bound in fish scales. Darkness arises after passages of the book where spoken.

Doc Bass, a wacky scientist takes Rainbowie back in time with a time machine made from a DeLorean. But after accidentally altering Rainbowie’s past, the future is now on a path of destruction. Rainbowie and Doc Bass must go back further in time to prevent themselves from ruining the future.