In Aquaman 3 (2025), the tides turn once again as Jason Momoa returns as Arthur Curry, facing a threat older than Atlantis itself. Peace between the underwater kingdoms is shattered when seismic tremors reveal the existence of a forgotten ocean realm hidden beneath the Mariana Trench — a shadowy empire known as Nerethal.

Ruling this realm is Prince Vaelor (Timothée Chalamet), a brilliant but vengeful leader who believes Atlantis stole his people’s birthright. Armed with ancient magic and commanding creatures that defy understanding, Vaelor seeks to reclaim the seas — and reshape the world above.

Haunted by visions and bound by duty, Aquaman must uncover the truth behind Nerethal’s exile while forging uneasy alliances with old foes, including Orm and the mysterious Fisherman King. As Mera faces political upheaval on land, Arthur dives deeper into uncharted waters — both literal and emotional.

With sweeping underwater battles, lost civilizations, and powerful new mythology, Aquaman 3 delivers a visually breathtaking and emotionally rich finale to the trilogy.