Enter a world of endless mountains, vast gorges, and furious winds. This is the high frontier. A group of heroes called the Sky Commanders protect this land from the evil General Plague and his band of Raiders. From their mobile base, Vector Command, the Sky Commanders defend themselves from the Raiders attacks. Due to the treacherous conditions it is difficult to fly. The preferred mode of transportation is via cable or track. Each side has special vehicles that travel on these cables and each vehicle is designed for particular kinds of missions or conditions.