Lin Xiao, who worked overtime until late at night, mistakenly entered a non-existent elevator and came to the "13th and a half floors" - a convenience store that only opened at midnight. No ordinary goods are sold here, only "prices" are traded: an embarrassing memory is exchanged for a can of coffee, a day's good luck is exchanged for a bowl of oden, or even life, emotion, and memory are exchanged for everything you desire. The shop owner Lao Chen warned him: all choices have costs, and the real secret of this shop lies in his mother who has been missing for fifteen years.
At the same time, freelance journalist Su Wan followed her here to investigate a bizarre disappearance, and her sister was one of the victims. The two were forced to join forces to fight against Lu Heting, the head of the Lu Group, who wanted to activate the ancient altar and gain immortality. Lin Xiao discovered that he had "gatekeeper blood" - the only person who could prevent the altar from being activated. And the ultimate price he has to pay may not be his life, but all the memories of love.
When the convenience store door opens again at midnight, what are you willing to pay for an answer?
