Ocean-Master briefed his loyal purists about the last phase in the plan to cleanse Poseidonis of impure influences. They needed to abduct Queen Mera first.[1]
Mera was brought to the cave, and Ocean-Master started draining her life force. He confided with her his true plan: not racial superiority, but a civil war between the impure and Poseidonis. Ronal overheard it and changed sides; Aqualad and his friends arrived shortly after. Garth summoned the power of the Tempest to overwhelm the villain, who was forced to retreat.[2]