Humanity has survived environmental and atmospheric calamity and begun to move out into the stars. Sport still plays a vital role in our day-to-day affairs. The Big Red Buckle recounts an episode of a single-stage endurance race held between two shield volcanoes on a Mars that is slowly being terraformed. Participants must run and soar over 1,500 kilometers while the solar system watches. For Marco Aguilar, just being at the starting line represents the culmination of two years of careful preparation and training. He aims to win the Grand Martian Traverse, and take home The Big Red Buckle for himself and for native Martians.