Tom Tyler stars as Jim Lester, trying to prove that Francisco Cortez (Frank Lanning) is innocent of killing Lester's father years before.

The real villain is the mysterious Phantom and his League of the Lawless.

Francisco Cortez escapes prison after serving fifteen years for the murder of Jim Lester's father.

Hunted by a posse, the escaped convict takes refuge in Jim Lester's house.

He lists the names of seven men, one of which is the real killer, the murderer calling himself "The Phantom".