When Kailani turns 16 she is quickly thrust into the world of gods, goddesses, demi-gods, and guardians. Kailani is powerful and as the only daughter of Poseidon she is valuable. The teenager soon learns the gods are on the verge of a power struggle. Alliances quickly form and enemies are all around. Kailani doesn't want power but to save those she cares about she just might have to fight and embrace the water and her destiny.

Every hundered years, the Moon Goddess sends one of her thirteen precious daughters to roam the Earth, help those in need and protect those too weak to do so. At the end of a hundered years, the daughter is called back to the Goddess and another one replaces her. Lycans are in charge of training her. Protecting her. But first, they need to find her.