Intrepid teenage adventurers Annie, Oliver, and Ryan are transported to Greece, where they battle mythical Greek gods and fierce beasts to retrieve a golden trident on Mount Olympus. The group travels to many Greek islands looking for clues to help them find the trident and, in doing so, free from captivity a human witch who has been imprisoned by the powerful Greek god Zeus. During their adventures, Annie, Oliver, and Ryan must show persistence, strength, and wisdom as they confront difficult and potential deadly situations. They learn the true meaning of courage and friendship along the way.