Black Manta seeks revenge on Aquaman for his father’s death. Wielding the Black Trident’s power, he becomes a formidable foe. To defend Atlantis, Aquaman forges an alliance with his imprisoned brother. They must protect the kingdom.

Aquaman balances his duties as king and as a member of the Justice League, all while planning a wedding. Black Manta is on the hunt for Atlantean tech to help rebuild his armor. Orm plots to escape his Atlantean prison.