Young Nathalie leaves her rural hometown to fulfill her dreams in the city. Her first order of business is to locate Johnny, a rock star she once met and who told her that she would be welcome to contact him if and when she was ever in Berlin. She gets lost on the subway, and as she travels from station to station, she meets an assortment of Berliners - all of whom struggle and muddle through a hopeless world. She meets punks, dealers, sadistic schoolgirls and desperate homeless people from all walks of life as she hunts in vain for the hard-to-locate rock star. Unlikely as it may seem, the film has a happy ending, and an unusual route to getting there. Like many of Hauff′s films, his examination of present-day Germany involves looking at its past. Line 1 includes a condemnation of Nazi sympathizers: the war widows we meet hide any evidence of their husbands′ crimes and live off fat pensions provided by the military. Line 1 is based on the musical play by Volker Ludwig and the GRIPS Theatre.