Good Wilt Hunting, Part 2 (S04E13)

After once again having no visitor at the Foster’s Creator Reunion Picnic, a lonely Wilt sets out across country in hopes of reuniting with his long lost creator. Uncertain as to why Wilt left, Bloo and the Foster’s gang set out on a road trip to find him. Hindered by Bloo’s far out theories and Wilt’s overly good nature, the chase takes many unexpected twists and turns and all the while we come to learn about Wilt's mysterious past. (iTunes)