Mihoshi's brother has come to Earth to pursue a deadly mission. Everything seems under control until warrior Z storms in to kill Tenchi and claim his place as the ruler of the universe! Can Tenchi's Light Hawk Wings save the day?

Tenchi seeks answers from his past while Ryoko faces the present head on. But the gang's world gets turned upside-down when they receive a strange visitor. After composing himself, Tenchi discovers that the mysterious visitor is not his mom, but a long-lost sister who has come to inform him of his arranged marriage and, more importantly, his new fiancee, Noike.