Co-founded by Peter Gabriel in 1965, Genesis came to define the prog-rock sound with their near-symphonic pop and highly theatrical live shows that involved masks, makeup, props, and elaborate staging. Though drummer Phil Collins assumed stewardship of Genesis after Gabriel´s departure in 1975, fans generally acknowledge that the keyboardist´s tenure with the band represents their artistic peak. This documentary offers a critical review of Genesis´s recorded output during the Gabriel years (1970-1975) through archival footage, interviews with critics and musicologists, and performance clips.