The protagonist Lin Jinyu is an online reasoning anchor who specializes in mysterious urban legends. Due to fans' votes, she accepted the challenge and took photographer Qin Yuchen, her friend Chen Miaomiao and others to live in a closed high-rise apartment known as the "Ghost Building" to reveal the haunting rumors through an experiential live broadcast. Unexpectedly, not long after entering the building, various supernatural events followed: knocking on the door at night by an owner, whispers in the corridor late at night, figures in the mirror... And even tenants disappeared frequently. While "joking about fear", everyone united to save themselves in an increasingly tense atmosphere, and found out the murder conspiracy surrounding the entire building behind the incident. As the mysteries are revealed layer by layer, desire, sin and fall are intertwined, and the darkness and glory of human nature also collide in the crisis throughout the night. In the end, they work together to overcome the dangers and dig out the ultimate secret of the "Ghost Tower".
