| Director | Jay Chandrasekhar |
|---|---|
| Box office | $8 million |
The Super Troopers - Thorny, Farva, Rabbit, Mac, and Foster - gather for Farva's wedding to Thorny's sister Sarita after he saves her from a car accident two months earlier. Thorny does everything he can to show his family that Farva is not a good guy so that he can break up the wedding.
Foster and Ursula break up as well since Foster freaked out because Ursula wanted to buy a home together. Farva manages to charm Thorny and Sarita's parents, Mr. and Mrs. Makundan, to Thorny's dismay. The Troopers also have to deal with a new drug called "Canadian Crystal". Thorny decides to have his father see how unhinged Farva is at his bachelor party. During the bachelor party the Troopers' new captain, Markowski, accidentally eats Rabbit's mushroom-filled chocolates and hallucinates.
Mr. Makundan ends up having sex with strippers whom Thorny wanted Farva to hook up with and injures his leg. Mrs. Makundan forgives her husband after he confesses but tells him she will have sex with someone else to make them even. After Sarita sees what Thorny is trying to do, she disinvites him from the wedding. After the bachelor party ends Mac ends driving the stations new electric vehicle and ends up discovering that former local pot dealers, Steve and Baker Buchanan, plus their cousin Bettie, whose cover are wedding planners (they are hired for Farva's wedding) are the ones making Canadian Crystal, and the Troopers' rookie Coy is in on the scheme.
Coy knocks out Mac, and they freeze him in solid frozen syrup that has Canadian Crystal in it, but the electric car saves him since the car notices his life support is low and drives him to the wedding. Meanwhile, Thorny discovers through Farva's dashcam footage that he's the one who ran Sarita off the road. Thorny goes to stop the wedding this way, but Farva admits to what he did first. A partially melted Mac reveals the Buchanans' scheme during the ceremony and that the drugs are stashed in an elephant statue. After a gunfight, the Buchanans are arrested and Rabbit kills Coy with a knife to the chest.
Mrs. Makundan tells her husband that she wants her revenge sex to be with Captain Markowski since he jumped in front of a bullet to save her life and got shot. She gives him the Kama Sutra book and tells him to look at a specific page. Thorny begrudgingly officiates Sarita and Farva's wedding, as well as Foster and Ursula after he apologizes for freaking out about the house, and Mac and the electric car. Farva tells Thorny he's going to be an uncle, and Thorny sticks him with an EpiPen.
In a mid-credits scene, Captain O'Hagen, who has been retired and been visiting the troopers during the course of the movie, is in a tub with his girlfriend, former Governor Jessman, and says to them that the reason he visits the old station is to find $4 million he hid many years ago. A title card appears that reads, "Super Troopers 4: The Search for O'Hagen's Gold".