The romantic entanglements of four young professionals lead to heartache and misunderstanding until all of their deepest secrets are revealed during an illuminating chance encounter. Yukako's life has been unraveling ever since she became convinced that her boyfriend Shigehisa is having an affair. One day, as Yukako is coming home from work, she collapses and concerned co-worker Noboru comes to her aid. Noboru is smitten by the pretty Saeko, yet unbeknownst to him, she has been having a clandestine affair with Shigehisa. Meanwhile, Noboru's chivalry will have unexpected consequences when all involved find themselves in the same room, and the truth about their tangled relationships begins to come out.