Diane parece estar com a vida feita: melhor estudante de sua classe, tem bolsa uma bolsa de estudos na Inglaterra assegurada. Até que, no último verão antes de sua viagem, conhece Lloyd, um simpático rapaz com boas intenções, mas que não tem a mínima idéia do que quer fazer de sua vida.
A middle-aged couple, on the verge of proceeding with a divorce, find themselves questioning their decision to separate when fellow friends and neighbors, oblivious to their marital troubles, assemble at their house for a 4th of July Weekend party.
A photographer for a men's magazine is haunted by disturbing dreams, in which he slaughters his models. When he learns that these models are dying in real life as they did in his dreams, he begins to go insane.
A small Arizona town is plagued by violence created from the tension between Anglo and Mexican-American youths. Tony (Tom Nardini) is the idealistic new kid in school who tries to alleviate long-time tensions between the rival factions. The Mexican gang is led by Paco (Zooey Hall), a hot-tempered youth with good reason to resent some of his Caucasian counterparts due to past prejudices. Bruce (David Macklin) is the leader of the white gang. Patty McCormack and Joanna Frank are the female interests who become victims of the gang struggles. Tony, formerly from San Diego, attempts to change the attitudes of the polarized and violent groups. Simms (Russ Bender) is a bigoted educator who fans the flames of hate, and Wilson (Arthur Peterson) is the school principal who is helpless to stop the violence between the two factions.
Biker gang leader Kisum (Adam Roarke) loves waitress Marcia Little Hawk (Joanna Frank). Her brother Johnnie Little Hawk (Robert Walker, Jr.), the leader of a group of American Indians disapproves. At various times these two groups are adversaries and allies. The two groups join forces but crooked businessmen scheme to have them at each other's throats again. The theme song "Anyone for Tennis" is by Cream. The Iron Butterfly are heard playing their classic "Iron Butterfly Theme." Producer Dick Clark and director Richard Rush made "Psych-Out" earlier in the year.