Mush: The Race of Mercy is a game based on an Alaskan event the year of 1925. As the small town of Nome was beset by a diphteria epidemic, Dr. Curtis Welch sent a call for aid, for vaccine to be sent to the town as soon as possible in order to stop the outbreak. However, the harsh, cold winters of Alaska made transport by vehicle all but impossible. The serum would have to be delivered by dogsled. Braving the freezing, harsh Alaskan wilderness, you have the chance to become a hero!