Atlantis, once the most developed civilisation on Earth, is now an underwater realm governed by the egotistical King Orm. Orm intends to conquer the last aquatic inhabitants and eventually the surface world with the help of his enormous army. Aquaman, Orm's half-human, half-Atlantean brother and...

Atlantis, once the most developed civilisation on Earth, is now an underwater realm governed by the egotistical King Orm. Orm intends to conquer the last aquatic inhabitants and eventually the surface world with the help of his enormous army. Aquaman, Orm's half-human, half-Atlantean brother and legitimate heir to the kingdom, is in his path. Aquaman must collect the fabled Trident of Atlan with the assistance of the royal counselor Vulko and accept his role as keeper of the deep sums up Aquaman.