Watch MoviestoWatch. Percy works in the maintenance department of Crumbs Custard Factory. He likes custard so much that he has his own private custard-making machine at home. One evening, Percy fails to notice that his vat has sprung a leak, and is spurting custard on a courting couple outside his apartment. A mob breaks into his room, smashing up his vat. Driven to revenge, Percy decides to flood the city with custard.