To ascend to the position as Queen of the seven seas and land, the Siren princess Ailesse must finish a mission assigned by her royal council. But in order to accomplish this, she must assassinate King Matthew II's son Prince Arran, the heir apparent, who killed the former siren queen (her mother). However, obtaining retribution is just as important as killing the prince in this mission. However, the prince only knows that two months ago, his father perished in a shipwreck. Ailesse is preparing her scheme to woo the prince and ascend to the throne as both the sea and the land. With the weight of his responsibilities crushing down on him, the prince is searching for his one true love to lead the kingdom alongside him. Aliesse has a simple plan: woo the king, marry him, and then murder him the night of their wedding. But who can predict what will happen next when pieces come together, destinies shift, and real love is discovered? She finds herself fighting not to lose her heart while attempts are made on his life in an attempt to keep him alive long enough for him to appoint her as his queen. Who better for Prince Arran, after all, than a manipulative, villainous siren queen?