Late at night in the city, the Huangquan convenience store opened at twelve o'clock in the morning. It did not sell human fireworks, but only accepted business from ghosts. Lin Mo, a down-and-out college student, accidentally entered this place to pay off his debts and became a night shift clerk. From then on, he stepped into the strange world of humans and ghosts. Every product and every customer hides unresolved obsessions and bloody pasts. He is struggling on the edge of life and death, not only to complete the shady mission, but also to uncover the thousand-year secret behind the convenience store...