2035年，经历了“赤道之冬”濒临灭亡的大危机后，残存的人类确立了世界新秩序，即由机器人“Gigantic”作为国家代表而战斗的“WWW”（Wisest World War）。全世界用于代表战的机器人Gigantic共有12架，其中代表日本的驾驶者是13岁的少年州倭慎吾和14岁的少女神代真名。由于世界能源革命和政变不断发生，两人一机的战斗于是开始了……
Tomoya Mikami's life changed one day when his girlfriend Ayaka was hit by a car and killed on her way to meet Tomoya. He blamed himself for her death and never was the same after the accident. He began acting callously towards Yue and his
