Trailer Park Boys actors John Paul Tremblay, Robb Wells and Mike Smith as fictionalized versions of themselves. The fictional trio are starring in a new sketch comedy series, Happy Funtime Hour, but their production goes awry when a mad scientist named Doctor Funtime (Maury Chaykin) forces them to ingest a hallucinogenic substance he created. The actors must go through unpredictable events while constantly meeting different characters.