Investor firm employee Pat (Karen Mok) overhear a group of girls talk about the haunting that takes place each year in their office high-rise, which leads to the deaths of nine people every time. Meanwhile, Pat's friend, computer game programmer Ken (Stephen Fung), runs into a mysterious woman covered all in white in an elevator while in the office on his first day on the job. These events precede three loosely connected stories involving Pat, Ken and other office workers' ghostly encounters in three different office divisions within the building.