"Daijobu 3 Kumi" depicts the interactions between new teacher Shinnosuke Akao, who was born without arms and legs, and the 28 students in his 5th grade class, told from the vantage point of school board member Yusaku Shiraishi

Tsugumi Dozono (Nana Eikura) works at a large electronics company in Tokyo. She likes to spend long vacations at her grandmother’s house in the countryside. One day, her grandmother passes away and Tsugumi Dozono decides to live in her grandmother's house while working from home. She finds a strange middle-aged man in the house. The man's name is Jun Kaieda (Etsushi Toyokawa). Jun Kaieda tells Tsugumi that he is her grandmother’s ex-student and her grandmother gave him a key to the annex house. Tsugumi, who does not know the exact relationship between her grandmother and Jun, begins to live with him.

Iku (Nana Eikura) joined the Library Defense Force after a member from that team retrieved an important book that was targeted for censorship. She is assigned to work under Atsushi’s (Junichi Okada) team. She endures Atsushi's harsh treatment and looks for the member who retrieved her book. She also finds herself becoming attracted to Atsushi. Iku meets female high school student Marie (Tao Tsuchiya) at the library. Maries has a hearing disability. She is also a childhood friend of Mikihisa (Kei Tanaka). Iku senses Marie’s strong feelings for Mikihisa. Asako (Chiaki Kuriyama) works as a clerk for the Library Task Force. She has frequent meetings with curator Shuji (Aoi Nakamura). This creates complicated feelings for Hikaru (Sota Fukushi). One day, Mikihisa is arrested because of a book he recommended to Marie. Official reason given is because the book is unsuitable for disabled people. The members of the Library Task Force are angered by Mikihisa's arrest.

1989 is the 64 Shouwa year in the Japanese calendar, thus the unsolved girl kidnapping-murder case is called "64(rokuyon)" that got up in this year in Criminal Investigation Department in the Prefectural Police Department. And 14 years were over as the prefecture's police to be unsolved greatest stain, and statute of limitations approached it. In 2002, Yoshinobu Mikami, an ex-detective who was assigned as the investigator of the "Rokuyon" case 14years ago, moves as a Public Relations Officer in the Police Affairs Department against his will. As a newly assigned Public Relations Officer, he was troubled with the relation between the reporters, new case has occurred. And that new case traced "Rokuyon" case exactly. Written by ken soto