Based on the autobiography by Klaus Voormann, Hamburg Days is set in the early 1960s. In the smoke-filled clubs of Hamburg's St. Pauli's red-light district, an inexperienced young rock ‘n' roll band from Liverpool collide with two young artists, Klaus Voormann and Astrid Kirchherr. Together they help spark a transformation that turns a scrappy group of teenagers into the greatest music phenomenon the world has ever known: The Beatles.