Kaos Island, co-constructed by High Seas International, has a beautiful environment and rich ecological resources. It is the last pure land for rare wild animals. The island's one-handed Fire Biotechnology accidentally lost two genetically mutated monsters in a transaction with its employer, causing a series of hurtful incidents. But what is unexpected is that while Song Nan, a young biologist, was investigating the incident, his biological daughter Xiaoting was abducted by a monster. What makes Song Nan even more unexpected is that these two mutated monsters are actually secretly related to his ex-wife Zhou Qian. An arduous task of searching, subduing the monster, and rescuing Xiaoting begins. In this race against time, Song Nan was unknowingly involved in a bigger conspiracy.

In this era of chaos, Wu and Yue compete for power and influence. After the battle of Biaojiao, Yue is on the brink of destruction while Wu secures its dominance. Xi Shi, a Yue woman, and her father escape to the capital in search of refuge. Amidst the turmoil, Xi Shi vows to seek justice for the wrongs done to her and her family.

The brave and resourceful Yue arrives at Yuelai Inn and gathers everyone involved in a fish monster murder case three years ago in the name of holding a Mid-Autumn Festival banquet. She devises a clever plan to find out the real culprit who killed her sister Li, breaking the superstition and upholding justice.