Years ago, Aquaman's actions caused the death of Black Manta's father, but thanks to a gift from Lex Luthor, that injustice might now finally be righted. An A.I. made from Manta's father's DNA now controls a massive robot known as "Mecha Manta." Together the reunited father and son will destroy Arthur Curry for good. Manta's own son, however, has chosen the opposite path. The aquakinetic teenager Jackson Hyde is Aquaman's newest protege! As Mecha Manta lays siege to Amnesty Bay, Aqualad must choose between his family and his mentor. And while Arthur tries to be a surrogate father to Jackson, his estranged fiancee Mera prepares for the birth of their own child as the arrival of Aquababy approaches!