Battle of Wits Against the Clown Killer

On his birthday, Shen Lang mysteriously enters an infinite loop, repeatedly killed by a masked clown in a bathroom stall. After waking up on the couch multiple times, he realizes he must escape the killer to break the terrifying cycle. Through each death and rebirth, Shen Lang discovers more clues - the killer is a woman working for someone else. He uses the killer's phone calls to eliminate suspects one by one. After several attempts, Shen Lang captures the killer during a power outage and interrogates her. When friends arrive at the office, the killer breaks free and attacks. Shen Lang realizes there are actually two killers - one who shoots him and another who runs him over. Through accumulated clues, he identifies the mastermind as Liao Dazhuang, who wants the Yunhai project. After exposing Liao's plot and having him arrested, Shen Lang goes to collect surveillance evidence but realizes there's still another accomplice - the security guard approaches with a hidden knife and sinister smile.