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, Arthur (Aquaman) forges an alliance with his imprisoned brother. They must protect the kingdom.
In 1909, Willie Boy and his love Carlota go on the run after he accidentally shoots her father in a confrontation gone terribly wrong. With President Taft coming to the area, the local sheriff leads two Native American trackers seeking justice for their “murdered” tribal leader.