During the Cold War, an American scientist appears to defect to East Germany as part of a cloak and dagger mission to find the formula for a resin solution—but the plan goes awry when his fiancee, unaware of his motivation, follows him across the border.

Boston is being terrorized by a series of seemingly random murders of women. Based on the true story, the film follows the investigators path through several leads before introducing the Strangler as a character. It is seen almost exclusively from the point of view of the investigators who have very few clues to build a case upon.

Perennially stoned Cheech and Chong tear through the city of Los Angeles, causing trouble wherever they go. After Cheech loses his job, the two pot enthusiasts head to the welfare offices where Cheech's girlfriend, Donna, works. Instead of collecting unemployment, they find themselves thrown back on the streets, searching for a way to earn new income. But when Cheech's cousin, "Red" Mendoza, arrives, things get even crazier.

A disenchanted young Professor of Semantics at a California college learns of a distant relative's death in Missouri. He journeys cross-country to the funeral, then decides to spend the summer there and work as a laborer for a power-line company. In time, he meets a girl and falls in love but then faces an important decision as to which direction he wants his life to go.

Marshal Chris Adams turns down a friend's request to help stop the depredations of a gang of Mexican bandits. When his wife is killed by bank robbers and his friend is killed capturing the last thief, Chris feels obligated to take up his friend's cause and recruits a writer and five prisoners to destroy the desperadoes.