The Teen-Agers are down in the dumps: their football team faces almost-certain defeat, the school paper might need to suspend publication because circulation is so low, and the principal intends to replace student performers with professionals.

A Marine Sergeant wounded in overseas combat requires an operation, and the Navy psychiatrist recommends that ‘Sarge’ be given a few weeks’ rest before hospitalization. Through the Dean of San Juan Junior College, Sarge enters on a temporary basis. Meanwhile, the Teen-Agers are rehearsing a show and Freddie's worried as they have no band.

A college professor falls in with the counterculture crowd in San Francisco after resigning from his position in solidarity with two expelled hippie students.

When teen heartthrob Frankie Troy disappears, high schooler Freddie Trimble–a dead ringer for the crooner–is singled out by his so-called friends as the radio star. As hijinks ensue, things worsen when Troy's wife and newborn arrive.