Yuriko is a wife who lives with her husband in a house in a quiet residential area. Recently, there has been an increase in burglaries in the area, so her husband has been warning her to be careful. One day, when Yuriko returns home from shopping, she notices that the door is unlocked. Feeling suspicious, she opens the closet to get changed, only to find a burglar hiding inside. When the burglar pulls her into the closet, the cardboard on the outside starts to collapse, trapping the two of them in a small, closed room...