A new synopsis for Aquaman: King of Atlantis teases the world of James Wan's upcoming animated series.

The three-part mini-series will feature Arthur Curry beginning his first day of ruling the underwater kingdom. He'll be joined by Mera and Vulko as they attempt to protect Atlantis from surface dwellers, ancient evils from the deep, and Ocean Master, AKA Aquaman's evil brother, Orm. Check out the synopsis below:

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The three-part animated mini-series event begins with Aquaman’s first day on the job as king of Atlantis and he’s got a LOT of catching up to do. Luckily, he has his two royal advisors to back him up – Vulko, the scholar, and Mera, the water-controlling warrior-princess. Between dealing with unscrupulous surface dwellers, elder evils from beyond time and his own half-brother who wants to overthrow him, Aquaman is going to have to rise to the challenge and prove to his subjects, and to himself, that he’s the right man for the trident! Based on the DC characters, Aquaman: King of Atlantis is produced by Warner Bros. Animation and executive produced by James Wan (Aquaman and the upcoming Malignant), Atomic Monster’s Michael Clear (Annabelle Comes Home) and Rob Hackett (Swamp Thing), and Sam Register (Teen Titans Go!). Victor Courtright (ThunderCats Roar!) and Marly Halpern-Graser (Batman vs. Teenage Mutant Ninja Turtles) serve as showrunners and co-executive producers.

The first look at the series came in February as part of a trailer for Warner Bros.'s upcoming animation slate. It showed off the unique style of the show, which will see the green-haired Aquaman and the red-haired Mera taking decisive action as they seek to protect their home.

"This DC property is a fan-favorite rich with well-known characters and dynamic storylines," Head of Original Content at HBO Max Sarah Aubrey said when the Aquaman cartoon was announced last year. "On the heels of Warner Bros. Pictures' box office smash hit, we are certain Aquaman: King of Atlantis will be an exciting addition to our already robust slate of kids and family programming."

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Along with the new series, which has yet to receive a release date, the King of Atlantis will return in next year's Aquaman and the Lost Kingdom, directed by Wan. While little is known about the plot, it will likely also see Arthur, Mera, and Vulko fighting Orm, monsters from the Trench, and surface dwellers -- along with a few new threats.

Source: HBO Max