The Teen Titans are assembled at S.T.A.R. labs, where Dr. Jenet Klyburn is attempting unsuccessfully to cure Thunder and Lightning of their unwanted powers. Kid Flash and Robin are both considering quitting the Titans. When the S.T.A.R. machinery explodes from an energy over-load, a brief and senseless battle ensues between the twin brothers and the Titans, until Raven, despite the danger to herself, offers to use her soul-self to learn the whereabouts of their missing father. Thus, it is revealed that the man who called himself Walter Williams was an extraterrestrial being who had been the sole survivor of a crash-landing on Earth six hundred years ago, and who had returned to Viet Nam, the site of the crash, in the guise of an American soldier, to retrieve his spaceship. Almost killed when he accidentally triggered the ship’s security devices, he made his way back to American-held territory, where he met and shared a romance with the Vietnamese woman who became the mother of Gan and Tavis. Discovering his present whereabouts, Thunder and Lightning, together with the Titans, find their alien father a prisoner of the HIVE, who have been exploiting his powers for their own ends for years. Under the HIVE’s control, the alien attacks the heroes, ultimately forcing Thunder and Lightning to slay their own father. Using the deceased extraterrestrial’s blood, S.T.A.R. scientists can cure Thunder and Lightning, allowing them to control their powers, after which the brothers return to their mother’s homeland.