In an anonymous Japanese metropolis, a dark erotic force infiltrates the lives of a reserved career woman in her thirties and her obsessively clean workaholic husband. Invading the most private aspects of the couple's lives, a mysterious stranger sends an envelope bearing the inscription "Your husband's secrets." A deliriously perverse tale of buried sexual desires, Shinya Tsukamoto's surreal journey to the dark side of obsession is as stylish as it is totally unforgettable.