Merfolk girl Bai Jiaojiao waits bitterly for Alan for seven hundred years, looking forward seven times to him retrieving the merman pearl, yet coming up empty each and every time. She ventures into the Abyss of the Sea and unexpectedly discovers that Alan gave the merman pearl to Hong Ling. Heartbroken and disillusioned, she agrees to a marriage alliance with the Dragon Clan. However, Alan listens only to one-sided words and believes blindly, while Hong Ling secretly plots behind the scenes, subjecting Jiaojiao to endless grievances. In her moment of crisis, Dragon Crown Prince Cang Ming appears to protect her, revealing that the one who truly saved her seven hundred years ago was none other than himself. On the wedding day, Hong Ling's true form is exposed, and Alan is filled with remorse and regret. Jiaojiao lets go of her old attachments, joins hands with Cang Ming to behold the four seas, and finally attains gentle, deep affection, welcoming the fulfilling life that belongs to her.