The story begins in a village whose most precious item, a giant blade, is worshipped as a holy symbol. Ruuji, a teenage boy, discovers an ancient Liger-type Zoid, the Murasame Liger, while on a deep water salvage operation. His village is suddenly attacked by skeletal "Bio-Zoids" intent on securing the powerful Generator located in the village. During the attack, Ruuji awakens Murasame Liger and fends off the Bio-Zoids, however the Generator on which the village depends becomes damaged in subsequent attacks. Seeking to repair it, Ruuji sets off on a journey to find a mechanic capable of fixing a generator.