Madoka Kyouno is a lively girl brimming with passion. As the sole and proud member of the Kamogawa Girls' High School Jersey Club, she spends her time assisting those in need. Madoka's world is shaken when a mysterious girl named Lan suddenly asks her to pilot a robot. Driven by her wish to safeguard the people and the city of Kamogawa, Madoka accepts the role of piloting the revived Vox robot to battle extraterrestrials that have arrived to attack Earth.