In Aquaman 3 (2025), the underwater kingdom of Atlantis faces its greatest threat yet. After the events of the previous film, Arthur Curry (Jason Momoa) has established a fragile peace between the surface and the sea. However, a mysterious new force emerges: Prince Lysander (Timothée Chalamet), a charismatic and brilliant Atlantean exile with a claim to the throne. Lysander, disillusioned by Arthur’s alliance with the surface world, rallies a faction of Atlanteans who believe Atlantis should dominate, not coexist.
The film opens with a spectacular underwater chase as Lysander’s followers sabotage a diplomatic summit. Arthur, now a father, struggles to balance his duties as king and parent. Mera (Amber Heard) is torn between supporting Arthur and understanding Lysander’s grievances, as she once shared similar doubts about the surface.

Lysander’s plan involves awakening an ancient sea titan, dormant beneath the Mariana Trench. With the help of advanced Atlantean technology and forbidden magic, he unleashes the beast, causing catastrophic tsunamis and threatening global destruction. Arthur and Lysander engage in a series of intense battles, both physical and ideological, debating the future of Atlantis and humanity.
In a climactic showdown, Arthur and Lysander must join forces when the titan turns on its master, threatening to destroy Atlantis itself. The two rivals, realizing the futility of their conflict, combine their powers to subdue the creature. Lysander, redeemed, chooses exile, vowing to find his own path. The film ends with Arthur reaffirming his commitment to unity, as Atlantis and the surface world begin a new era of cooperation.

The rumored production budget for Aquaman 3 is around $250 million, reflecting its massive underwater set pieces and cutting-edge visual effects. Jason Momoa’s net worth is estimated at $40 million, with a reported salary of $15 million for this installment. Timothée Chalamet, joining the franchise, has a net worth of approximately $30 million, earning around $8 million for his role as Lysander. These figures highlight the film’s blockbuster scale and star power.