Su-chan, Mai-chan, Sawako-san follows the lives of three women who are former co-workers. 34-year-old Su-chan works at a coffee shop and has feelings for the manager there. 34-year-old Mai-chan works at an OA machine maker. She is in a relationship with a married man. 39-year-old Sawako works as a web designer and also takes care of her grandmother. -san and her mother take care of her grandmother.
Undercover cop Sakura Mizusawa assumes many faces as she teams up with a hot-blooded detective, Masato Takeuchi, to form a crime-solving tag team with an ear for the truth. With an uncanny ability to connect all the disparate voices she hears undercover, Sakura goes in complete pursuit of criminals, giving her undivided attention to incidents that could happen to anyone and alleviating the suffering of the weak and disadvantaged.
A woman named Kazuko (Kimura) who was guilty of a “serious crime” in the past, along with three of her friends. Those friends suddenly begin to die one by one. Kazuko learns that one of those deaths is somehow connected to Mamoru (Nakamura Aoi), her younger brother from whom she has been separated ever since their father disappeared 15 years earlier. Although Mamoru knows nothing of his sister, Kazuko is determined to find the killer in order to protect Mamoru and herself.
