Madoka Kyouno is an energetic girl brimming with passion. As the proud and sole member of the Kamogawa Girls' High School Jersey Club, she spends her time assisting those in need. Madoka's life is upended when a mysterious girl named Lan suddenly asks her to pilot a robot. Driven by her wish to protect the people and the city of Kamogawa, Madoka agrees to pilot the resurrected Vox robot to battle extraterrestrials that have arrived to attack Earth.