In 1982, the legendary British heavy metal band Spinal Tap rock band became a hit. Film director Marty (Rob Lerner Rob Reiner) is a loyal fan of the Spinal Tap band. The Spinal Tap band is coming to the United States for a comeback tour, while Marty is shooting an accompanying documentary for the Spinal Tap band. This imitation documentary deliberately fabricates a British rock band Spinal Tap, which vividly depicts the inconsistent faces of the rock band on and off the stage, and makes a sharp satire and mockery of contemporary rock music. This film is written, directed and performed by Rob Lerner. The film music in the film is performed and created by the actors themselves.