A sudden infection disaster occurred in Lanjiang City. Officials announced that the entire city was under lockdown, and all those bitten would enter a 72-hour sobriety period. After the countdown ends, they will move towards three endings: becoming corpses, evolving, or becoming empty shells.
Delivery boy Lin Yue mistakenly entered the closed old building while delivering orders late at night and rescued the blood-stained little girl An An, who was also infected. Seventy-two hours later, he did not turn into a monster, but woke up in a strange ward. The countdown reset to zero, his memory was lost, and there was only a note written by himself in the takeout box: Don't trust An An.
As the lockdown deepens, Lin Yue discovers that behind the so-called virus disaster, there is a new human screening experiment using the entire city as a petri dish. Are infected people still human beings while awake? Will you still be your original self after the reboot? When the system, companions, memory and body all begin to betray him, Lin Yue must find out the truth and regain the right to decide who he is before the countdown reaches zero again and again.
