Elementum

Liam, an Elemental living in a secret Elemental safe haven, sworn to protect the lives of his people, and Alexis, the daughter of the tyrant king, an elemental treated as a servant in her own house.

When the leader of the safe haven is kidnapped, Liam must gather together a group to save him from the tyrant's castle, but standing in their way is the King hellbent on destroying all Elementals in his way.