Conny Plank was one of the most innovative sound experimenters, producing recordings that revolutionized music that still holds true as ever. He became a center for new German sounds. He is a producer, sound engineer, and musician who covers a wide range of genres including progressive, avant-garde, electronic, and krautrock music. Dying at just 47, Plank left behind a wife, actress Christa Fast, and a 13-year-old son, Stephan. Now, 20 years later, as Stephan sets out to find his father, the film takes a journey through music history and around the world, to offer unusually intimate and emotional insight into the artists, his work with Conny Plank and the many musicals. footprints they left behind.