In order to achieve zero deaths in the mountains, Zhou Zi (Dan Li) considers the hospital to purchase a rescue helicopter so that doctors can go to the mountain for rescue as soon as possible.However, there was no precedent in Japan, so Zhouzi first asked the county for assistance in order to qualify.Junie Kenichi (Matsuo Ron) from the Medical Policy Section came to inspect, but Junie was skeptical of MMT's activities. To convince him, he had to show solid results.

On the other hand, Uda (Yukijiro Hotaru), who suffers from heart disease, follows the footsteps of his late wife and enjoys the joy of mountain climbing under the guidance of Ayumu (Haruka Sugino).His wife Setsuko wrote "Like a jewel box" on her blog during her lifetime. Uda wanted to see the beautiful landscape illuminated by the sunset and decided to challenge a more steep mountain.

After getting Ayumu's permission, Uda started his dream mountain climbing trip. On the way, he met Nakabayashi Naoshu (Takashima Goji) and Mariko (Arihara Minam), a couple who were going to the same destination.Seeing their intimate appearance, Uda couldn't help but think of himself and his wife. He smiled as he watched Naoshu and Mariko enjoying the fun of mountain climbing as a couple, which was something he had not been able to do for his wife during his lifetime.

However, that night, the Nakabayashi couple who were resting in the tent were attacked, and Mariko suffered serious head injuries.The attacker was a bear that has been seen frequently recently.Panicked, Uda ran to the couple's tent and dialed Ayu's phone number.

Ayumu immediately contacted Ayukawa, who was on his way to the tent camp, and cooperated with Komiyayama (Sapito Yashima), who was on duty for the first time that day and was staying at the mountain hut clinic.However, Uda decided to go down the mountain with Mariko, who was seriously injured...