Aquaman 3 (2025), fans are introduced to a thrilling new dynamic with the addition of Timothée Chalamet, whose character plays a pivotal role in the movie’s unfolding conflict. The trailer opens with stunning underwater visuals, revealing Atlantis in a time of relative peace. Arthur Curry (Jason Momoa) is seen in his full regalia as king, confidently ruling over the ocean realms. However, this peace is short-lived as the trailer hints at dark forces brewing both within and outside Atlantis.
Timothée Chalamet’s character, named Arion, is introduced as a young Atlantean historian and mystic with deep knowledge of the ancient oceanic gods. Arion uncovers prophecies warning of an upcoming “Deluge,” a catastrophic event that threatens both Atlantis and the surface world. Though Arion initially tries to keep his findings quiet, it isn’t long before he realizes that the threat is far closer than anticipated. Arion’s cautious wisdom contrasts with Arthur’s more direct approach, creating tension between the two as they struggle to agree on how to address the looming danger.
Soon, an ancient ocean deity named Cetus awakens, harboring immense power and an insatiable vengeance against both Atlantis and humanity. Cetus has the ability to control massive underwater beasts and summon cataclysmic waves, making him a formidable antagonist unlike any Aquaman has faced before. Black Manta (Yahya Abdul-Mateen II) reappears, forging an unlikely alliance with Cetus in hopes of destroying Atlantis and avenging his father’s death.
As the trailer progresses, epic battle scenes unfold between Arthur’s forces and Cetus’s growing army. Timothée Chalamet’s Arion becomes a key figure, aiding Arthur with ancient Atlantean magic and unlocking powers of his own to stand against Cetus. The trailer showcases glimpses of Arion wielding enchanted weapons and summoning mysterious forces, suggesting he may hold secrets vital to overcoming the new threat.
In the closing moments, Arthur, Arion, and Mera (Amber Heard) stand on the edge of a submerged ruin, facing an approaching storm that Cetus has summoned, promising an intense and action-packed showdown. The final shot teases an uneasy alliance as Arthur and Arion prepare for the battle of a lifetime, setting high expectations for Aquaman 3’s release.
