A resourceful young wireless enthusiast becomes attached to the U.S. Secret Service and uses radio skill to help solve crimes in and around New York, including wool and cotton smuggling, stolen wheat, hidden jewelry, and liquor smugglers. The narrative follows his apprenticeships, discoveries, and narrow escapes as he deciphers wireless tips, aids captures, and conducts surveillance, often alongside experienced agents and camp comrades. Episodes combine technical details of early wireless practice with suspenseful chases and investigative work, showing how practical knowledge, observation, and teamwork expose criminal schemes.