Aqualad returns, seeking the Sea King's help in locating a sunken nuclear submarine! This leads to a fierce battle with the villainous Charybdis, who holds hostage someone who will come to mean a great deal to the Sea King: Dolphin.
Aquaman's powers are out of control, and Swamp Thing helps Aquaman defeat a two-bit villain in order to prove this to him, and give him the help he needs.