Mischievous Huck Finn is unnerved when his father, reemerging after years away, kidnaps him in an attempt to take away a $600 inheritance from his late mother. Fearing for his life, Huck fakes his own death and escapes. He soon runs into his friend, Jim, a slave fleeing his master. Together, the pair embarks on a raft journey down the Mississippi River, staying ahead of pursuers who blame the slave for Huck's alleged murder.
Graduate student Harry Bailey was once one of the most visible undergraduate activists on campus, but now that he's back studying for his master's, he's trying to fly right. Trouble is, the campus is exploding with various student movements, and Harry's girlfriend, Jan, is caught up in most of them. As Harry gets closer to finishing his degree, he finds his iconoclastic attitude increasingly aligned with the students rather than the faculty.
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.
At first gas station attendant Poet is happy when the rockers gang “Hell’s Angels” finally accepts him. But he’s shocked when he learns how brutal they are – not even murder is a taboo to them. He gets himself in trouble when the leader’s girlfriend falls in love with him – and he welcomes her approaches.