Tập 1: Daisuke mất trí nhớ gặp Koji Kabuto ở sa mạc khi Grendizer xuất hiện

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A man who fell into the desert has no memory. He is named Daisuke and hits it off with Koji Kabuto, who picked him up. As unidentified forces attack the Earth, a giant robot called Grendizer appears. (Source: IMDB)