The 29th day of the twelfth lunar month in 2026 is the eve of New Year's Eve in the Year of the Horse. A severe blizzard, rare in meteorological history, struck the city, paralyzing traffic in the city instantly.
Seven strangers who have never met each other are forced to be trapped in a 24-hour convenience store called "Warm Light" in the city center: Lin Wan, a young woman carrying a mysterious silver suitcase, Chen Jin, a surgeon who is catching the last high-speed train home, Zhou Guodong, a middle-aged father who is looking for his missing daughter, Su Man, a company executive who has just experienced workplace betrayal, Zhao Dacheng, a bankrupt young boss who is avoiding debt, Xiao Shu, a taciturn convenience store night shift clerk, and Xu Qingkong, a decadent writer who claims to have come to buy cigarettes but has not left.
What should have been just a few hours of insignificant intersection in a long life has turned into a seven-day ordeal about human nature, redemption and truth in the extreme environment of a city surrounded by snow and wind. Everyone holds unspeakable secrets in their arms, and everyone's eyes reflect the past that others cannot understand. As supplies gradually depleted and the temperature continued to drop, the shadow of an old case from twelve years ago quietly enveloped this square inch of space.
When the bell of the Year of the Horse is about to ring, they must decide: Should they save each other or betray each other?
