Kate Vernon returns to "Mizzoura," after attending a fashionable seminary and looks down on her former suitor, sheriff Jim Radburn, who, unknown to Kate, paid for her education. When a highwayman robs the train, Sam Fowler, an express messenger, is arrested as being an accomplice. After Kate gently refuses Jim's marriage proposal, she plans to elope with handsome Robert Travers from St. Louis, whom she met at school. When Sam, freed with Jim's help, recognizes Travers as the highwayman, Travers kills a detective and escapes because Jim will not spoil his record of never killing anyone. Travers tells Kate that Jim has framed him, and she hides him. Jim tracks Travers to Kate's house, and although he thinks that the mob should have him, he takes Travers to his own house, to hold him for trial, out of respect for Kate and the law. When the mob prepares to raid Jim's house, Travers is killed trying to escape.