ぼくらの - 夏休み、過疎地の村へ“自然学校”にやってきた少年少女15人。1週間が経ったある日、海辺の洞窟へ探検に入った一同は、その奥にコンピューターを持ち込んで住んでいた謎の男・ココペリと出会う。彼は自分が作ったゲームをやらないかと誘い、宇白可奈を除く14人の中学1年生が同意して契約を結ぶ。半信半疑で宿舎に戻った一同だったが、その日の夕刻、大きな物音と共に巨大ロボットが現れて…
Bokurano - Synopsis
15 children, 8 boys and 7 girls, are enjoying their summer camp together when they suddenly discover a grotto by the sea. When they enter the mysterious place they find a room full of computers, as well as a man named Kokopelli, who introduces himself as the owner. He claims to be working on a game which involves a giant robot that has been designed to protect the Earth from 15 different alien invasions. Kokopelli hasn't been able to test the game yet, so he persuades all but one of the children to sign a contract in what he claims will be a fun adventure.
However, as soon as the contracts are signed things start to take a much darker turn. In Bokurano, the children must now pilot the giant robot Zearth one at a time in the hopes that they will have what it takes to defeat all of the upcoming enemies. But Kokopelli has left out one very important piece of information: the giant robot Zearth's energy source.