A playful Queen Mera, entices her husband, Aquaman, into pursuing her for a kiss. Catching up to her, Aquaman takes his prize, only the woman he kisses isn't Mera. It is her twin sister, Hila. As Hila is regarded as the black sheep of the family, Mera, out of shame, has never told Aquaman that she even had a sister, let alone a twin. Hila, along with her love, a man named Kandor, were exiled from Dimension Aqua, for crimes, she contends, they did not commit. Hila has come to ask her sister to free her from the hold Kandor has over her, so that she can start a new life. Hila leads Aquaman and Mera to the mouth of an underground river, one that leads to Kandor's lair, deeply recessed inside an underwater mountain. Posing as Hila, Mera takes the jeweled starfish, that Hila was sent out to obt