Trailer Park Boys: Don't Legalize It is the third film in the Trailer Park Boys franchise, and a sequel to Trailer Park Boys: Countdown to Liquor Day (2009). In the film, Ricky (Robb Wells), Julian (John Paul Tremblay) and Bubbles (Mike Smith) attempt a series of get-rich-quick schemes after being released from prison, but are again pursued by former Sunnyvale Trailer Park supervisor Jim Lahey (John Dunsworth).

It has been one year since the successful "train ride" in Maine, and Ricky, Julian and Bubbles are about to become rich. On the eve of dividing up the money, the Boys are ambushed by Sam Losco, and the money is lost forever. Ray is back living in the dump, the Boys are penniless once again, and Ricky has to deal with Randy raising "baby" Randy with Lucy. Meanwhile, Lahey hatches a greasy plan involving "dirty dancing" to get the Boys out of Sunnyvale for a good, long time. Written by Anonymous

The boys return from jail to find the park has deteriorated, with a brand new park being created beside it. They attempt a series of get rich quick schemes and robberies, while a freshly drunk Lahey threatens to derail their plans.