The world's smartest people can't stop laughing. Is this the work of the crazy criminal Dr. Chuckles? Only Secret Agent Dingledorf (the country's greatest agent, even though he is just ten years old) can find out. Together, with super cool inventions (that always backfire), major mix-ups (that become major mishaps), and the help of Splat the Wonder-dud, er, Wonderdog, our hero winds up saving the day...while discovering the importance of respecting and loving others.