Call Me Fitz (2010)

When the Fitzpatrick family learns their newest member has gone missing, no one really cares... until they find out Josh stashed the profits from the baby brothel in his diaper. Fitz and Larry follow Baby Fitz' trail to Chester Vince, who happens to be holding Ali Devon hostage in the back of his van. Fitz and Larry soon join Ali, and the three of them must find a way to work together in order to keep a mentally unbalanced Chester from burning them alive in a quest to communicate with his alien overlord, before the track down the child.