Zhouzi (Tan Rei) appoints Ayumu (Sugino Haruka) as a member of MMT. However, the chief of the emergency department, Komiyayama (Yashima Tomato), has a negative attitude towards mountain medical care. Even if an accident occurs on the mountain, the patient should still be in the hospital.treat.He is a troublesome character.In addition, Kakegawa (Kondo Park) from the internal medicine department and Noriko (Okazaki Sae) from the anesthesiology department also lacked motivation and faltered.When it was decided who would go on duty at the mountain hut, no one raised their hands. For the first time, only Ayumu and Noriko went up the mountain.

Father and son Noguchi Nanami (Aki Nishihara) and Daichi (Yokoyama Ayumu) ​​came to the mountain hut clinic.The two said that this was their first time climbing a mountain. Daichi seemed embarrassed about mountain climbing with his mother, and seemed to have some resistance to Nanami.Looking at the appearance of the mother and daughter, Abu couldn't help but laugh, but when he saw Dadi wearing tattered sneakers, he couldn't help but be a little concerned.

The next day, Ayumu and Noriko, who were undergoing medical treatment in a mountain hut, were notified that Nanami had slipped under the cliff on her way to the top of the mountain.Dadi's arm seemed to be injured, but because of the strange weather, the rescue helicopter couldn't fly.Ayumu and Noriko rushed to the scene and tried to save Nanami under the cliff.

After struggling to rescue Nanami, she tried to send him to a hut in the mountain, but Nanami's condition suddenly deteriorated.He should have been sent to the hospital immediately, but the situation progressed to the point where he was unable to move.For now, let Daichi be handed over to the rescue team that arrived as part of the rescue of Nanami.In the mountain hut clinic with imperfect equipment, Ayumu didn't know how to maintain the patient's life, so he asked Rei (Emma Miyazawa) in the hospital for a favor.

At this time, in the hospital, Daichi was given to Komiyayama.He noticed something was wrong with the patient...