A Pennsylvania band scores a hit in 1964 and rides the star-making machinery as long as it can, with lots of help from its manager. But behind the scenes, the group’s sudden fame tests their strength, their maturity and responsibility, and their ability to resist the temptations that money and notoriety always make possible.

When his boss is killed, Detroit cop Axel Foley finds evidence that the murderer had ties to a California amusement park called Wonder World. Returning to sunny Beverly Hills once more, Foley reunites with Detective Billy Rosewood to solve the case. Along with Billy's new partner, Detective Jon Flint, they discover that Wonder World is being used as a front for a massive counterfeiting ring.