In order to protect himself, the young Chen Yang listened to the dying request of a white shark, thus possessing the most ferocious power in the sea. As the next generation of mermaid priest, Lin Xi'er saw her dearest grandmother's disillusionment and decided to escape from the deep sea where she grew up. Lin Xi'er, who was curious about everything, accidentally awakened the shark hidden in Chen Yang's heart to express his guilt. Chen Yang took care of the mermaid who had difficulty moving on land. In the process of getting along, the two fell in love with each other. However, where does the "sacrifice" existing in fate lead the "thoughts" in our hearts?
