Madoka Kyouno is an energetic 17-year-old girl who is full of passion and who loves her home town Kamogawa and likes to help people in trouble. As the proud, and only, member of the Kamogawa Girls' High School Jersey Club, she goes around helping people in need. Madoka's life is turned upside down when she is suddenly asked by a mysterious girl named Lan to pilot a robot. Motivated by her desire to protect the people and city of Kamogawa, Madoka agrees to pilot the resurrected Vox robot to fight against extraterrestrials that have come to attack Earth.