High school student Jinta (Nijiro Murakami) is a hikikomori and lives in Chichibu, Saitama Prefecture, Japan. One summer day, when Jinta is absorbed in a video game, a girl suddenly appears in front of him. The girl is Jinta's childhood friend Meiko (Minami Hamabe), but it seems impossible because Meiko died on a summer day. Meiko wears the same white dress when she died, but she looks a little taller. She tells Jinta that she has a wish and that's why she came back as a ghost, but Meiko can't remember what her wish was.
To grant Meiko's wish, Jinta along with his friends Atsumu (Jun Shison), Naruko (Airi Matsui), Chiriko (Marie Iitoyo), Tetsudo (Yuta Takahata) and Meiko gather together for the first time in 7 years. Jinta soon realizes that he is the only one able to see Meiko.
Detective Keita Kurokouchi (Tomoya Nagase) continues to extort money from politicians whom Keita Kurokouchi has information on. By using his information he is able to crack unsolved cases. Rookie Detective Mayo Seike (Ayame Gouriki) is excellent with her job and also a bit naive. She conducts an internal investigation on Detective Keita Kurokouchi, but they become partners and work on cases together.
Rena Sasaki (Keiko Kitagawa) is a beautiful woman with excellent memory and intelligence. She becomes a private detective and risks her life to chase down evil private detectives, because her younger sister was murdered by a stalker. The person that provided information to the stalker on her sister's location was a private detective.
Hisashi Ieji (Takuya Kimura) works for a securities company. 5 years ago, Hisashi Ieji had an accident at the place where he was sent to work. Due to the accident, his recent memories have become blurred. He also doesn't have any feelings for his wife Megumi Ieji (Aya Ueto) or 4-year-old son. To him, its like his wife and son are wearing masks. Hisashi Ieji does have fond memories for his ex-wife and daughter. He divorced his ex-wife 5 years ago. To find out what happened to him for the past 5 years, Hisashi Ieji goes on a trip to find himself and he takes 10 mysterious keys.
Light Yagami (Masataka Kubota) is an ordinary university student. One day, he receives a death note which changes his life. The death note awakens his warped sense of justice and genius. He becomes murderer Kira and punishes criminals.
L (Kento Yamazaki) is a well known private detective. L appears in front of Light Yagami. L defines Kira as evil and decides to catch Kira. Then N (Mio Yuki), who has a beautiful appearance but dangerous existence, appears.
Makoto Tsugano (Keiko Kitagawa) is a medical intern. Recommended by physician Kojin Tsukuba (Ikko Furuya), whom she respects, Makoto Tsugano receives training at a forensics medicine classroom. There, she feels the classroom has a weird atmosphere. Professor Tojiro Kosaki (Kyohei Shibata) leaves the classroom and Makoto is alone in the classroom. She answers a phone call and hears a girl's voice asking "is that the place where autopsies are conducted?" The girl wants an autopsy performed on the body of a woman who died in a car accident. Her father was involved in the car accident. Even though the police conclude that an autopsy is unnecessary, Tojiro Kosaki presses ahead with the autopsy. Makoto doesn't understand Tojiro's excessive ways, but the autopsy reveals a hidden truth.
In 2009, Yamato Narumi (Sota Fukushi) is a 3rd grade high school student in Nagasaki, Japan. Yamato and his friend Miku Odagiri (Kyoko Yoshine) find an old man, Akira Shoji (Teruyuki Kagawa), stabbed and lying in the street. The old man tells Yamato that his father is the criminal in the 300 million yen case. That night, Yamato’s father, Tetsuya (Toshiaki Karasawa) disappears and 3 days later his body is found drowned in Tokyo. Yamato and Miku find themselves caught in a whirlwind centered around the still unsolved stolen 300 million yen case from 1968.
This is the story of how Koudai Shigemasa, Jr. and his wife met. The story is set on 30 years before the film timeline.
Fukamaru Yuuko (Komatsu Nana) is a fourth year student in the prestigious private university. She meets Koudai Shigemasa/Masao (Mamiya Shotaro) who transferred from Oxford. One day, Nao--Yuuko's best friend, and Masao are dating. However, Masao has affair and Yuuko helps her best friend to reunite them. One week later, the two break up and Masao decides to confess his feelings to Yuuko.
Catherine Turner is the daughter of the Vice President of the United States, and she had come with her father on his official visit to Japan. Since she runs a flower arrangement business back in the US, Catherine decides to stay on in Japan to learn Ikebana, after her father had returned home at the end of the official visit. Japan's Minister of Foreign Affairs, Hamaguchi Yukio, asks his nephew, Ichiro, to escort Catherine during her extended stay in Japan with the strict instructions that he is not to fall in love with her.
Catherine actually started her flower arrangement business after a chance meeting with a Japanese woman, Ogawa Maiko, who had held an exhibition in the United States. She befriended Maiko, and is now hoping to reunite with her old friend in Japan. Unable to reach Maiko, Catherine is shocked to learn that Maiko is a victim of a homicide. Thus, with the help of Ichiro, Catherine begins to look into her friend's death. -TV Asahi