While Jo Kaisaka might be the ace of Dr. Tobishima’s team of fancy fliers, he’s never flown a giant robot before! Following a successful air show, the good doctor learns that a UFO is heading straight for his base on Akane Island! Jo rushes to the scene of the crash, discovering a transforming robot jet and its beautiful pilot, Rita. She reveals that an evil alien menace known as the Gaira plan to take over the world, and they’re starting with Japan! With Rita injured from the crash, Jo joins her in the cockpit of Earth’s only hope - Groizer X!

Studio Knack (Chargeman Ken, Astroganger) and Director Hiroshi Taesenji (Monchichi Twins) roll the super robot alphabet back from Mazinger Z to Groizer X in this action-packed spectacle from the mind of Go Nagai (Devilman, Cutie Honey)! This mighty collection contains all 36 episodes of Jo and Rita’s clash with the Gaira on one powerful disc! Presented in standard definition with original Japanese language and English subtitles!