After his wife dies in childbirth, mountaineer Jim Grimsby names his newborn daughter Bill, and raises her as a boy. Remaining a boy in name only, however, Bill soon wants to style her hair and wear the latest fashions. She soon develops a crush on the new sheriff, Waldo Whittier. Appalled at the prospect of his "son" marrying Waldo, Jim decides to test the sheriff's grit, and so, believing that Waldo will be too frightened to come after him, he robs a casino.