In 2050, the moon was mysteriously terraformed after a great moonquake, giving it Earth-like gravity and breathable air. In 2100, fifty years later, the moon is now populated with humans and has become a popular tourist destination. After a boy named Daichi arrives on the moon for summer vacation, he accidentally meets an old witch, V-Mei, and her granddaughter Guri Guri. Both of them are members of the endangered Long-Ears race, currently at war with the evil Jadou Clan, who are also planning to take over Earth. V-Mei gives a magic gun to Daichi and reveals that he is the chosen Madou Warrior destined to save the Long-Ears race and their land Rabiluna from the Jadou Clan.
With the magic gun, Daichi can summon Granzort, a giant robot called a Madou King with the elemental power of Earth, to fight against the monsters of the Jadou Clan. During their travels, Daichi, V-Mei, and Guru Guri are later joined by two other Madou Warriors, Gus and Rabi. Gus's magic bow summons Winzart, the Madou King of Wind, while Rabi's magic top summons Aquabeat, the Madou King of Water.
Theme Songs
Opening
"Hikari no Senshi-tachi (Soldiers of Light)" by Kenji Suzuki
Lyrics: You and Hisa Araki, Composer: Yukihide Takekawa, Arranger: Yamamoto Takeshi
Ending
"Horore chuchu parero" by Tomoko Tokugaki
Lyrics: You and Hisa Araki, Composition: Kosugi Yasuo, Arrangement: Yamamoto Takeshi
Guest Character Design: Toyoo Ashida, Takahiro Yoshimatsu, Emiko Uesugi
Guest Mechanical Design: Hiroshi Fuji
Key Animation: Studio Live, Nakamura Production, Studio Mu, Anime R, Last House, AIC, Studio Gain, Studio Emu, Studio Kaatan
Inbetween Animation: Project Team Mu, Studio Takuranke, Studio MAX, Studio Gain, Studio Wombat, Studio Emu, Monsieur Onion, Project Team Mu, Studio Mark, Usagiya, Studio Kuma, Echo, Studio G7, Anime Roman, Magic Bus, Last House, SPEC, ABU, Studio Live, Group ZEN, Nakamura Production, Neomedia, Twenty First, Anime R, Sendai Gallop
