After confronting Prince Clovis, Lelouch learns information about his mother's murder. Back at school, he is surprised to find that one of the terrorists he worked with is a fellow classmate. But when he confronts her, he finds the limits of his new power.

The mysterious green-haired girl known as C.C. is alive and intent on hanging around Lelouch as he accepted the contract and the Geass Power. Meanwhile, Suzaku is set free and encounters a strange girl who calls herself Euphie.