In the "Lost Kingdom," Aquaman (Jason Momoa) will face off against Black Manta (Yahya Abdul-Mateen II), and this time his ally will be Orm (Patrick Wilson).

The central theme of the plot revolves around global warming, pollution, and toxic waste. The latter drives the story, as the villain needs toxic waste not just to power octopus-like robot suits found in the Antarctic ice, but also to warm the Earth and free the lost kingdom of Necrus.