A crop chopper, hover platform and web line go missing in Treetopolis only to be found in a new Zigzoo invention. Having borrowed the items without asking, Zigzoo inadvertently creates a mystery for Tom and Twigs to solve. Turning detective, they find the missing things and discover that Zigzoo has also taken berries from a very annoyed boing beetle. The beetle goes on a rampage to find the missing berries, putting everyone in its path in jeopardy. Using Big World Magic, the berries are returned to their rightful owner, and Zigzoo learns a valuable lesson: 'ask before taking something'.