What is considered "normal" for a 30 year old? Should she be married, have a career, live independently...? Shuko Maeda, 28, is a single office worker who lives in a shared house with her three friends. One of them is Eika Matsuki, a career woman whose life revolves around work. Then, there's Misaki Kawaseda, a musician, singer and hopeless romantic. Finally: Shio Momoyama, who works freelance and is laid back in her professional and personal life. Together, they navigate the stresses and joys of daily life as women approaching 30, in a society that has certain expectations for them, while they all try to find their own unique way to thrive!