A strange invasion occurred on Blue Star. Liang Yan was trapped in a copy of the hospital's rules and had the ability to go back in time after death.
Survival rules that are difficult to distinguish between true and false, nurses who kill people with knives, patients who are easily transformed into beasts, and actors who are good at disguise are all over the ward.
Each participant masters contradictory rules and is surrounded by dangers. Liang Yan kept going through reincarnations of trial and error, collecting rules, forming a team to survive, and escaping from the hospital.
