After receiving a four-month-old letter from his mother, in which she asks for his help, Caleb McConnell (the Sabinas Kid) leaves Old Mexico, heading home to Colorado. But along the trail, an attempt is made on his life and The Kid begins to understand something of his parents' troubles. His challenge is to discover why someone is after his folks' ranch, the Rafter MC, and who is behind it all. When Caleb finally reaches Del Norte, he encounters one surprise after another. Childhood friendships are renewed, old grudges are re-energized, and guns blaze across the Rio Grande Valley as the mystery unfolds.