Zhang Shuo invites his best friend to go on a holiday trip with his girlfriend Liu Mengxiang and her best friend. He originally plans to make his long-prepared proposal during the trip, but it is unexpectedly disrupted. After accidentally checking into the most luxurious Neverland Hotel in the area, everyone cannot hide their glee, anticipating a more exciting journey ahead. However, behind the hotel's luxury lies a shocking secret. Niu Ye, the owner of Neverland Hotel, obtained a weird deep-sea fish from the market through illegal means. Upon realizing that the offspring produced by the big fish has a delicious and unique taste, a greedy ambition grows. Due to operation errors, a large number of the strange and aggressive big fish's offspring enter an area where humans live through a pipeline, triggering a chain of disasters.