Welcome to the world of Little Battlers eXperience! In the near future, a boy named Van Yamano owns Achilles, a miniaturized robot that battles on command! But Achilles is no ordinary LBX. Hidden inside him is secret data that Van must keep out of the hands of evil at all costs!

Van Yamano, Hiro and Laura combine their LBXs together into Sigma Orbis, the Super LBX, in order to defeat the Slayer Droid, a machine created to destroy all LBXs! Van and his friends are in for a tough battle when they are confronted by the Detector’s strongest guardian... Asuka Carter, a legendary LBX Player who has never been defeated in a tournament.