Aquaman Episode 3-4 The Return of Nepto / The Fiery Invaders Episode Title:The Return of Nepto / The Fiery Invaders.Episode Description:The Return of Nepto A major storm causes Nepto and his Viking crew to wake up from their deep sleep. They devise a plan to overthrow Atlantis and make Nepto the new king. Aquaman and Aqualad team up to try and stop them. The Fiery Invaders Aliens invade Earth to try and take over the planet. They set the world's oceans on fire and make a direct attack upon Atlantis. Aquaman calls in his fish friends to try and help ward off the attacks and put out the fires.