The mermaid came ashore not only for the prince, but also to save the afflicted people and to explore the land she had long dreamed of. Bai Mu is a curious and lively mermaid who has always dreamed of exploring the human world. One day, she meets Prince Allen at sea, and the two are instantly drawn to each other. But when Allen’s ship sails away, Bai Mu is left longing for him. Her chance to reunite comes when she hears of a deadly plague sweeping Allen’s kingdom. Determined to help, Bai Mu risks the dangers of the deep to collect the rare Moonlit Grass, a magical herb that can cure the sick. She then seeks out the enigmatic sea witch Ursula, who grants her legs and a luminous pearl to capture the wonders of the land. Stepping onto human soil for the first time, Bai Mu brings hope to a nation on the brink of despair. But her beauty, mysterious origins, and extraordinary powers quickly attract attention. As court intrigue and rival princes, including the ambitious Cedric, circle around her, Bai Mu must navigate friendship, loyalty, and her own dreams in a world that is as dangerous as it is enchanting.