There's Something Wrong with This Expedition Team

Mott is a scholar. A scholar crushed by failure. Later he became a husband, a teacher, and an old man watching the sunset in a wheelchair. His wife's name is Nia, a northerner who always smells of fir resin. He thought he could grow old quietly like this, drinking his favorite stew, teaching a few students, and occasionally taking a nap in the afternoon sun. Until a letter arrives. The letter said that somewhere in the distance, there were clues that could overturn his early research. Two students braved the wind and snow to bring him this letter and a pair of auxiliary prosthetics that could help him stand up again.