While tracing a trunk which they suspect contains guns being smuggled for sale to the Comanche Indians, Cisco and Pancho are surprised to find that the trunk belongs to Sally Benton, the daughter of the man who founded the town of the same name. The smuggling is being done by Dixon, manager of the local freight line, and Cisco discovers evidence that the weapons had been in the trunk. After further investigating, Cisco and Pancho reveal Dixon as the master-mind behind the smuggling ring.