Renton Thurston desires to leave his home behind and join the mercenary group known as Gekkostate, hoping to find some adventure. When a robot crashes through Renton's garage the meeting sparks the beginning of Renton's involvement with Gekkostate as he takes off alongside the young girl Eureka as the co-pilot of the Nirvash.

Yuko Sanpeias Renton Thurston (voice)
Yutaro Honjoas Ao Fukai (voice)
Kanako Miyamotoas Naru Arata (voice)
Ayaka Ohashias Fleur Blanc (voice)
Chiaki Omigawaas Elena Peoples (voice)
Kaori Nazukaas Eureka (voice)
Taro Yamaguchias Hap (voice)
Yasunori Matsumotoas Stoner (voice)
Mayumi Asanoas Hilda (voice)
Akio Nakamuraas Matthieu (voice)
Dai Sato
Sho Aikawa
Shoutarou Suga
Chiaki J. Konaka
Ichiro Okouchi