Mermaid Bride of The Dragon King

A new dragon king who has just succeeded to the throne faces the disaster of the dragon's extinction. He learned from the first king that the only condition for the dragon to continue to survive is to find the secret treasure of the mermaid again. One is a harmless and lovely girl, on the surface she is a princess loved by everyone, but in fact her life experience seems to have another secret. The stories of unusual kings and princesses, the secrets hidden in their respective bodies, when the truth unfolds layer by layer, which one will be stronger, the uncontrollable love or the inherent hatred?