Hoppy, California and Johnny are Texas Rangers trying to end a scheme which smuggles Mexicans into the United States to become essentially slaves in a silver mine owned by Orestes Krebs. The three are captured, sentenced to hang, and then escape. They free the slaves and capture the bad guys.
Border Patrol
When three Texas Rangers try to investigate kidnapped Mexicans being used as forced labor in the mines of Silver Bullet, they are framed for murder by the town's corrupt sheriff.
