The protagonist is named Lin Xiao. He is a 19-year-old boy whose family is poor. His father is dead and his mother is seriously ill and has been in a coma for a long time in the hospital. He only has a 17-year-old sister who lives with Lin Xiao. In order to take care of the family expenses, Lin Xiao works hard to make money. But one day the doomsday came. In order to protect Lin Xiao, his sister was killed by a monster. Lin Xiao tried his best but unfortunately died in the battle. Finally, he was reborn and returned to three days before the doomsday.
