Weird things happen frequently at Jiangcheng University, and Lin Shen, associate professor of the Department of Archeology, is ordered to investigate. He is cold and rational, specializes in folk taboos, and hides the mystery of his mother's disappearance. The school beauty Xu Zhiwei is extremely talented, but the math genius breaks into the darkness of the classroom. There are secrets hidden in ancient books in the library, there are constant strange noises in the abandoned laboratory, and strange puppets emerge from the lake. The two team up to investigate the case, crack the code, trace the spell, and face the first appearance of the evil spirit. The nursery rhymes on the radio hide murderous intent, and traces of sacrifices are found in the old church. The crisis escalates, and the mastermind behind the scenes quietly makes plans. Using their wits to overcome deceit, the ascetic professor and the top school beauty go deep into danger to uncover the truth behind a century-old curse on the campus.