Uchuu Enban Dai-Sensou  

La grande battaglia del disco spaziale, The Great Battle of the Flying Saucers, 宇宙円盤大戦争, The Great War of the Flying Saucers

Grendizer's pilot movie revolves around duke fleed, a fugitive from planet fleed who was exiled by the armies of vega due to political reasons. prior to the conflict between their planets, duke and the daughter of the king of vega were romantically involved. despite this, the armies of vega continue to wage war against duke fleed.