Su Liya (played by Zhang Dong) saw the news that a water monster appeared in Dianchi Lake while she was abroad. She vaguely felt that the water monster was inextricably linked to her missing father. In order to solve the mystery of her father's disappearance, she came to a dangerous village alone. The local villagers built a resort here to attract investment and tried their best to prevent outsiders from investigating the water monster. She was kidnapped and locked up in a small dark room as soon as she arrived in the village. However, she unexpectedly met her old classmate Sangha (played by Zhang Yuxuan) who had been taking care of her mother in China and Chang Long (played by Meng Zhichao), nicknamed "people-crazy". In order to protect the peace of the area, they used their cognition of high-dimensional space and the loopholes of time travel to fight wits and courage with the water monster and the greedy foreign evil forces. What is the connection between Su Liya's father's disappearance and the unknown creature? The answer is waiting to be revealed.