AllMovie

Mutiny may be on viewers' minds while sitting through this mindless musical outing that tells the tale of the mischievous ghost of a Caribbean pirate who rises from his resting place to visit his old haunts. Finding it covered by an amusement park, and seeing that Iron Butterfly is giving a concert, he decides to liven things up by opening the gates and letting screaming fans come in for free. The band members get upset because this means they won't get paid and they storm off the set forcing park officials to bring on local bands such as Grit and Fantasy to come up and play. Fortunately, a wealthy flower child offers to pay the band if they finish their concert. They accept and settle down to play their epic hit "In-a-Gadda-Da-Vida" and other popular songs.