Richard Davisson was celebrated in newspapers and dime novels for his daring exploits apprehending mail train robbers until he retired in disgrace, falsely accused of collusion with the robber he couldn't apprehend. Now he's trying to start over with a new name, an office job and marriage to the boss' daughter. But when a train wreck throws him at the feet of airship inventor Kate Jordan, will he stick with his original plan for a quiet life, or help thwart a scheme to steal Kate's airship, when the schemer is the one man he couldn't bring to justice--his own father?