Hardcore stoner buddies, Benji and Trey, are going strong on joint number two of their hot box session when Benji’s adoptive sister (and Trey’s crush) Wynonna unexpectedly arrives. Letting her in means letting out smoke, so only when she flashes a doobie of her own is Wynonna granted access to the car. Benji takes the sanctity of the hotbox very seriously. When their friends Pat, Joey, and Mel arrive with medicated gummy bears they open the doors for the last time and make their way, super stoned, to their seats. As the movie finally begins, the fun is just getting started.