Phil Kelly, a veteran of the Spanish-American War, serves as an American spy during World War I unknown to his mother, fiancée Rose Lockely and friends, who sadly question his loyalty when he fails to enlist.

Phil Kelly, a veteran of the Spanish-American War, serves as an American spy during World War I unknown to his mother, fiancée Rose Lockely and friends, who sadly question his loyalty when he fails to enlist.

While visiting Egypt, Mrs. Graham steals a famous jewel called "The Eye of the World" from a mummy's sarcophagus and returns to the United States, planning to use the gem as collateral for a loan. Kah, the priestess in charge of protecting the tombs of Egyptian nobility, is soon on her trail , determined to retrieve the gem. Mrs. Graham's lovely daughter, Betty, agrees to marry a suitor for money to prop up her father's failing business. When the bridegroom is murdered on the couple's wedding night, and the body disappears, Phil Kelly decides to lend a hand in solving the crimes.

A man comes by a map that shows the location of a secret treasure, but runs afoul of a criminal organization known as the "13". Chapter ten, eleven and twelve are still missing from this 15 episode serial.

In the mythical kingdom of Lyria, two young Americans get mixed up in a plot to get rid of the rightful king, who at times loses his reason.