Elizabeth lives with her family in Olympus. She lives with her dad Zeus. Her mom lives in New York. She doesn't know her mom because she is a human, so Elizabeth is not allowed to see her.
Elizabeth is a great warrior, and always wins in battle. As a result of this, Elizabeth is called to help protect the humans, including her mother. Hades is angry at the human world, and wants to destroy it. Elizabeth must stop him.
Elizabeth talks with her uncle, Poseidon, about going to help the humans. He gives her advice and wishes her luck. She doesn't know what lies ahead, but must go to protect her mother and the others. Elizabeth leaves Olympus and begins her trek to New York.
Elizabeth must seek help from her father in order to save her mother, the rest of the world, and to battle Hades and his army; However, she is not alone. She is with the new allies she made while on her journey who are great warriors too.
After Elizabeth survives death, she and her new friends save New York and everyone in it.
Although Elizabeth is praised by New York for her heroic and superhuman deeds, she humbly returns home. She leaves New York, but not for forever. She now knows her mother and what the human world has to offer. She will return one day, but for now she has responsibilities back in Olympus.