The Request for Help I Received Came from Three Days Later

Accident recording restorer Zhou Yu receives a distress recording from seventy-two hours in the morning every morning; the sooner he rescues people, the more the list of the dead in the recording will change. So he must work with a group of accident investigators who do not fully trust each other to find out the true cause and effect of the disaster without deciding "who should be sacrificed" for anyone.