A sudden case of a girl falling from a building on a peaceful campus appears to be a suicide but is full of doubts. Criminal investigation captain Ye Siyu led a team to intervene: lively assistant Ling Yang, calm Li Wen, gentle and careful deputy Luo Hao, and police officer Chen Feng jointly investigated. The autopsy report of forensic doctor Bai Wanwan and the abnormalities found at the scene by trace examination experts Fang Tian and Lao Zhou all point to murder. As the investigation deepens, a secret room, strange blood stains, and a hidden chain of campus bullying emerge. When the key evidence locked the suspect, an even colder truth alerted Ye Siyu: the real murderer was actually hidden within his trusted investigation team.
