Qin Chi is a Deputy Chief Police Officer who awakens from a coma with amnesia only to learn that he apparently led a team of his close friends on a stake-out that ended up with everyone dead. With police suspecting he was a traitor as the sole survivor and all the witnesses dead, Qin Chi must figure out what happened and what his role in the events was. Meanwhile, he's still a detective and has to solve the various other mysteries behind various complicated cases alongside his colleagues. (Source: The Suitcase Detective at MyDramaList)