Relena, now a deputy Foreign Minister for the ESUN, is abducted while on her way to colony X-18999. To her astonishment, the one responsible for her abduction is Mariemaia Khushrenada, Treize's daughter and the granddaughter of Dekim Barton, leader of the Barton foundation. However, it soon becomes clear that Mariemaia is being manipulated by her grandfather to complete his second scheme of total domination of that Earth sphere. Heero and Duo, having learned of Relena's abduction, decide to investigate and send Quatre on a dangerous mission to recuperate the Gundams, while Trowa learns about Dekim's latest bid for power and decides to stop him. However, as he tries to kill Dekim, Trowa is stopped by Wufei, now a member of Mariemaia's forces!