Season I:

Madoka Kyouno is an energetic girl who is full of passion. 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.  Season II: Several months have passed since Lan and Muginami left Earth. Now in her final year of high school, Madoka spends most of her days thinking about her friends, when Lan suddenly returns to Kamogawa City.

Watch Rinne no Lagrange seasons I and II (Dub) Online