Being framed by her best friend, the kind-hearted girl sank into deep sea. With hatred and regret, she signed a contract with the mermaid princess to get back at the bitch. While using the identity of the girl to help her take the revenge, the mermaid princess, on the other hand, is also searching for someone who is important to her. Qin Qing was persuaded by the rich girl Zhang JiaYao to attend a Yacht party, but she hardly realized that it was a conspiracy schemed by Zhang JiaYao out of jealousy and hatred...