In 1966, a group of courageous Colombian teachers defied all odds by embarking on an epic 1,600-kilometer march in defense of public education. Fifty-seven years later, they seek to return to the trail, but the pandemic and tragedy force them into lockdown. Only one hope remains: that Sor, a young teacher inspired by their legacy, will undertake the final journey in honor of their courage, accompanied by the voices of the walking teachers.