Jamie Grimm, soon to be the world's greatest stand-up (actually sit-down-in-wheelchair) comedian, lives with his aunt, uncle, and cousin - an extremely boring version of the Durlseys. He has an uncanny ability to make anyone (other than the aforementioned boring Durlsey-esque relatives) laugh. Jamie Grimm just funny!
When Uncle Frankie (not the boring one) suggests to Jamie that he compete in The Planet's Funniest Kid Comic contest, he knows he's got to try. His only problem is stage fright!