Cheech Marin and Thomas Chong co-write and star in this cult comedy about two stoners on a quest to get high. When Man Stoner (Chong) is thrown out of his home by his uptight parents, he soon meets and starts hanging out with the like-minded Pedro De Pacas (Marin). The two then find themselves accidentally deported to Mexico and when they attempt to make the return journey, they do so in a van made out of drugs.