In this city where time is passing by, there is only one last antique shop left. It does not sell antiques here, it only sells time. As long as you can afford the shop owner and offer enough chips, whether it is the future or the past, or even change everything... As usual, when the shop owner An Yu closed the store, a "Chun" who claimed to have received a letter from a friend who had been dead for three years came to take care of An Yu. The arrival of Chun broke An Yu's life of a walking zombie...