In this modern adaptation of the Dostoyevsky classic, a loner named Miroku takes it upon himself to kill a teenage girl leading a prostitution ring. She's an insect that hurts everyone around her. She needs to die -- and he's going to kill her. Why is that wrong?

Detective Ukyo Sugishita confronts crime on the basis of his own convictions. He has a partner that works for him in the Special Task Unit. For the first 7 seasons, Ukyo’s first partner is Kaoru Kameyama. He is a good-natured, hot-tempered, straightforward and somewhat scattered detective. Beginning in Season 8, Takeru Kanbe replaces Kameyama. Contrary to his predecessor, Takeru is a lanky, cool, conceited and confident detective. From Season 11 to Season 13, Ukyo’s partner is a young detective Toru Kai. Toru is a son of Deputy Director-General of The National Police Agency. But he became a detective by his own effort. And starting with Season 14, Ukyo’s current partner is Wataru Kaburagi, an elite bureaucrat who came to the Metropolitan Police Department on temporary assignment. As the first partner without any career of a police officer, he will face challenging cases together with Ukyo.

Ame is in Junior high and lives with her father, who is a butterfly collector in search of the Troides Magellunus. One fateful day, he decided to take a trip to Taiwan in hopes of catching the elusive specimen. Unfortunately, something goes wrong…. and Ame is left with only memories of Father… Memories that seem to have allowed him to return… as a spirit guide for Ame.

Zenigata Mai is a high school girl who sidelines as a detective. Her father is a high ranking police officer, so her partner Godai Jun is forced to allow her to participate in investigations, often through cellphone conversations.

Back in his high school years, Kazama Masamune had a girlfriend four years his senior, who one day left to go study abroad. Now, six years later, Kazama hears that his girlfriend has passed away, and that she had secretly given birth to their daughter, who is now five years old. Kazama then decides to raise his daughter on his own.

Yumi, a writer of a science magazine, witnesses a mysterious death of a high school girl who received a "one missed call" from her own cell phone, two weeks in the future. The disturbing message on the cell phone turns out to be the screams of the victim.

Seeking an escape from his mundane life, high-schooler Keita Amishima stumbles into the secret life of an agent of UNDER ANCHOR - a covert organisation combating cyber terrorism. Keita isn't alone, as he is partnered with an A.I. - the Phone Braver "Seven". Together, Keita and Seven work to counter cyber crimes, all the while dealing with the machinations of a rogue Phone Braver, "Zero One".

30-year-old Miki Makoto is an ordinary housewife struggling with housework and childrearing, but she has always believed in the importance of managing the household over looking beautiful so that her husband, Atsushi can go out to work without any worries. However, his infidelity spurs her to make up her mind to search for her “self” and become beautiful. Choosing the path of an amateur model, she steps into a modelling world that is rougher than she had imagined. Her weapons are her height which has given her an inferiority complex since young, and her extraordinary determination. She keeps having internal conversations with herself as she regains her lost beauty...

Set in the 1990's, high school student Ayu lives with her mother and grandmother in Fukuoka. She works as a model, but, to pursue an acting career, she goes to Tokyo with her grandmother. While attending a high school, she picks up acting work, but only minor roles. One day, Ayu meets Masa, who is the executive director of record label A Victory. He decides to make Ayu into a singer. According to Masa, Ayu prepares to make her debut as a singer. Meanwhile, she encounters jealousy from rivals at her record label. Trusting Masa, Ayu endures her problems. She also develops feelings for Masa and Masa also holds feelings for her.

A spin-off to the Japanese drama “M: Ai Subeki Hito ga Ite” centered around Masa's secretary, Himeno Reika.

Shūichirō Kiriyama works at the Limitation Task Force, the place where the cases which have reached the statute of limitations are destroyed. Getting bored of his job, he decides to find a hobby, because it seems important to him to have a hobby. So he decides to puzzle out the unsolved cases on his free time, helped by his coworker Mikazuki, who seems to have a crush on him.

Kishibe Midori (Ikeda Elaiza), an editor for a popular fashion magazine, finds herself transferring to the lexicography division following the magazine's discontinuation. The place is filled with a group of quirky characters, led by Majime Mitsuya (Noda Yojiro), a boss with a shaggy hair who is extremely serious. While being tossed about by them, Midori is influenced by their patience and passion for making a dictionary which takes over a decade, and she gradually immerses herself in the work. This drama depicts their struggles in creating and finalizing the dictionary, "The Great Passage."

A young genius surgeon named Mikoto Saijou was born with a serious heart disease. While he was a little boy he got surgery of the leading Japanese heart surgeon Mamoru Shindo and his life was miraculously saved. Mikoto was inspired by the magnificent skill of Dr. Shindo and later he became a world leading pediatric surgeon. With his miracle skill and technique, he challenges difficult surgery and makes them to succeed one after another. Save the lives of children will make the future, Mikoto believes.

Wicked lawyer Shirai Shinnosuke, who goes for profitable cases only, gets a case asking him to retrieve a famous painting stolen by the criminal of a robbery and murder case. While negotiating with the criminal without the police's knowledge, he gets the painting back but ends up being framed as the criminal instead. In order to clear his name, Shirai works with police officer Sotogawa (Koike Keisuke) and Nakano Hitomi the general affairs department of Metropolitan Police Department to overcome the crisis.

Nakano Hitomi is an ordinary employee who works for the Metropolitan Police Department’s General Affairs Section. Her job is to check the receipts for investigation expenses that the detectives pay in advance, but she is extremely sharp in detecting cases because she was raised by her father, who is a swindler. When serial killings and injuries occur, she is also the first to realise that the victims' names are linked to a word game in which one victim’s name contains the last character of the name of the previous victim. Hitomi uses detective Togawa of the First Investigative Division, whom she became acquainted with after finding discrepancies in his receipts and scheming lawyer Shirai Shinnosuke who works his way into the favour of victims to find work that pays well, to get close to the truth of the case.