Two sets of human bones were discovered in City T. To be precise, they were the bones of a man and a woman. Experts have determined that the two skeletons are at least 2,000 years old. In the hands held by the two skeletons is a blue diamond the size of a pigeon egg, which experts call "mermaid tears." Ji Shuyao, a reporter from City T, was interviewing on a cruise ship. Unfortunately, he was knocked into the water by a thief who came to steal the gems. Ji Shuyao, holding the gems, traveled through time. Others traveled through time to either the Qing Dynasty or the prosperous Tang Dynasty, or even to their hometown, but what she had to face when she woke up was an extra fish tail on her body. Ji Shuyao traveled to an era where mermaids coexisted. Faced with the adoration of a human prince and the long-lasting love of a mermaid king, what choice would she make? During this time-travel journey, what kind of "mermaid-like" story did Ji Shuyao finally learn?