Set after the events of Batman v Superman: Dawn of Justice (2016) and Justice League (2017), this movie recounts the story of one of DC's superheroes, Aquaman. The story starts with a man who works as a lighthouse keeper, Tom Curry. Tom manged to save the princess Atlanna from a real danger, the thing that leads them to enter a romantic relationship and they bring their child, Arthur Curry. Arthur has a superpower of communicating with marine lifeforms. Although the people don't need him as a ruler because he is a half-breed, he has to fight for them when a group of pirates come to invade Atlantis.