In the year 2090, a new energy source is invented and a city is constructed to focus on the further development of this energy called Oliver Port. In response, a company called LugnalCorp utilizes this energy source for the development of conscious mecha known as ARKS (Artificial Reflexive Keneticoid). Due to the high industrial demand for the ARKs, LugnalCorp rushes the ARKs into production; after a while of operation, the ARKs rebel against their human operators and start their rebellion over Oliver Port. A team of fighter pilots is assembled to combat the renegade ARKs under the name of Murakumo.