Sae Okazaki

Ayumu Miyamoto (Yosuke Sugino) is a young orthopedic surgeon. He goes back to his hometown in Nagano Prefecture and begins to work at the general hospital there. In addition to working as an orthopedic surgeon, he is ordered to join the mountain medical treatment team. The team provides treatment for patients who became sick or injured while in the mountains. The medical team members need to have knowledge about both the mountain and medicine. They are called mountain doctors because of this. Ayumu Miyamoto is not passionate about his duties on the mountain medical team. Things change as he works more with the team members. Meanwhile, Gakuto Emori (Nao Omori) is a circulatory physician who works at the same hospital and is a member of the medical treatment team. Although Gakuto Emori does his job well, he has trauma from his past that he tries to overcome.

Seishiro Tokai (Kazunari Ninomiya) works as a surgeon at a university hospital. He possesses excellent technique with suture and carries a surgery success rate of 100%. Due to his arrogant attitude and personality, he comes into conflict with those around him. A new doctor tries to introduce the latest medical device for surgery, which doesn't need a surgeon's hand. Seishiro Tokai is skeptical of the device. He faces the university hospital administration and reveals corruption and hidden past behind the medical device.

Mano Reiji, a man who experienced a gruesome incident, is a forensic researcher at the Tokyo Metropolitan Police Department's Investigative Science Research Institute. Under the belief that "appraisal will result in the truth" and with his vast knowledge, Mano approaches cases from a view point that differs from others. On the other hand, Sawaguchi Nonna (Araki Yuko) is a rookie forensic researcher that begins working with the no nonsense Mano. They are forced to work together on a murder case.