Luna is a normal girl who is taken one day and told that she is too powerful to be allowed to live. She does not understand this because to her, the only thing she is good at is bartending. However, she also knows that in times of stress, she grows vines from her skin.
When she begins to ask questions, twin brothers arrive to save her, killing the majority of people in their path. They tell her that she can trust them and ask that she come with them to a safer location. They take her home to their triplet brother. They choose to reveal that they are the sons of Aphrodite and Apollo, each with their own set of powers. One of the men then explains to her that she is the long-lost daughter of Hades and Persephone and that the four of them are meant to be together.
Theo, the most detached and impersonal of the three, struggles with his emotions and getting close to people. He constantly puts her down and is the hardest on her during training.
Jaxon is the happiest, most carefree, and loving of the bunch, who takes to Luna immediately. He is the first person she trusts and is the person that she goes to for comfort. He is her rock.
Asher, the most troubled of the three and who has been in love with Luna for longer than anyone else, struggles with the knowledge that he has of the future and constantly battles between reality and visions. He is the first to advocate for Luna.
The fates give a prophecy that she is meant to be the one to take down Zeus once and for all. Luna must decide if she will fulfill her destiny or if she is going to let the world burn.