A series of events leads single, 25-year-old Mikuri Moriyama and 36-year-old Hiramasa Tsuzaki to marry as a cover.

The drama revolves around Kounotori Sakura, an Ob-Gyn doctor working at the Persona General Medical Centre who is also a gifted jazz pianist. His mother had died in childbirth and he was brought up in an orphanage, which is what fueled his ambition to be an ob-gyn. He hopes to be able to deliver every baby to this world, congratulating them on the gift of life given to their little bodies. (Source: TBS)

On the night before ‘Black Friday,’ which is the one of the busiest commerce days, a cardboard box, that is delivered from the world's largest shopping site, explodes. Soon after, a series of mysterious explosion cases occurs. The entire nation becomes terrorized by the shocking events. Funado Erena has just began to work as the center director for a large distribution warehouse that covers three-quarters of the Kanto area. Erena must gain control over this unprecedented situation with team manager Nashimoto Ko.

The Mobile Investigative Unit (known as "MIU") of the Tokyo Metropolitan Police Department attempts to solve cases within 24 hours. Detective Kazumi Shima is selected as a new member of MIU. He is intelligent, with excellent observation and communication skills. Yet, he does not trust other people. He is unable to find a partner in MIU and is ordered to partner with Police Officer Ai Ibuki, who works at a police substation. Ibuki applied for MIU, but he failed. He is in excellent physical condition, but he lacks knowledge and experience as a detective. Shima learns about Ibuki's background and he becomes more nervous. Finally, Shima has his first meeting with Ibuki.

As a group of university students go out for a night on the town, a sophomore known only as "The Girl with Black Hair" experiences a series of surreal encounters with the local nightlife – all the while unaware of the romantic longings of "Senpai", a senior student who has been creating increasingly fantastic and contrived reasons to run into her in an effort to win her heart.