Sae is waiting with two clingy toddlers for her husband to come home from work when she learns of a horrific disaster, the collapse of a massive skyscraper where Jae is an engineer. Speculations of North Korean terrorism and structural instability circulate as possible causes of the Tower's collapse. No one has seen Jae, but things aren't adding up. Jae had told Sae he was working on the top floor, but reports showed he was in the basement. Sae-who met Jae when they were students at an anti-government protest and has relied on him as her guiding and steadying hand-is troubled and suspicious. Sae sets out to uncover the truth of what happened to her husband. Her investigation takes her to an upscale club where the proprietor, Myonghee, is not merely supplying booze and girls but also seeking information, for her own purposes, from every drunken businessman who lets corporate secrets slip.