Jimmy and Cannonball escort Anne Lamont, the new school teacher, to Oreville, where she is molested by two outlaws. Marshal Blackjack Flint wounds Slade, who tells Derringer that lawman Flint is wanted by the law and, unknown to Anne, is also her father. Derringer than kills Slade and begins to blackmail Flint. Jimmy and Cannonball join the fray on the side of Flint, the reformed outlaw.
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