Cheating Wife at Midnight.

Masumi's husband, Takeshi, jumps from an apartment building, apparently suffering from the pain of being laid off. When a doctor tells her that tonight will be the worst night of his life, she is devastated. Furthermore, Masumi's mental health is pushed to the brink as her former boss, who fired her husband, and a woman who has been having an affair with her husband since before they were married, show up.