Huffman Island, 2070. War has broken out between the O.C.U. and the U.C.S., fought through armored mechs known as wanzers, tanks, and helicopters in turn-based engagements. Players choose a side: Royd Clive commands the O.C.U.-aligned mercenary unit Canyon Crows, while Kevin Greenfield leads the U.C.S. Special Forces squad Black Hounds. Combat unfolds on a grid, with units selected and targeted through a stylus interface. Conflict resumes in 2090 when a U.C.S. factory is destroyed under circumstances that remain unclear.