Set in rural Nebraska following the First World War, six veterans on motorcycles ride into the sleepy little town of Bingo. The locals are friendly until one of the vets beats a local kid in a drag race, after which the six are driven out of town. After coming upon a small farm, the fugitives are allowed to hide out by the two sisters who run the place. Things go smoothly until one of the vets, after smoking the locoweed growing nearby, tries to rape one of the hosts. Being part Native American, her sister decides to get revenge by casting a hex that steadily does in each of the unwelcome guests.

A group of young drifters kidnap wealthy businessman Roc Delmonico just for kicks. They keep him captive, demanding a ransom for his safe release. However there is no one - wife, Mafia associates or mother - willing to part with the $200,000 ransom. Demonico is dismayed that no one appears unduly concerned about his fate and joins forces with the kidnappers to plot his revenge, blackmailing his once nearest and dearest into parting with $3,000,000 in hush money.

Valerie's prosecutor mom is trying to put away Adam, an alleged serial killer on trial for murdering six women. But he's so charming that the teenage Valerie just can't believe he really did it, and soon they begin sending each other letters. Adam is caught up in a jailbreak and ends up on the run.

An ex-con seeks revenge on the man who put him in prison by planning a robbery of the latter's stagecoach, which is transporting gold. He enlists the help of a partner, who could be working for his nemesis.

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.