A minister and his wife miss their steamer, so they manage to gain passage on the gruff, middle-aged Captain Sam McVey's ship. But McVey isn't willing to let them ride entirely for free and attempts to force himself on the minister's beautiful wife when he gets her alone in his cabin "for tea." The wife rebuffs his advances and her strong words cause a change to come over him, a desire to be decent. Little does McVey know that the seemingly decent couple are not who they seem. They're Smiley Marsden and Frisco Kitty, bank robbers on the run. But Frisco Kitty finds herself being changed by the captain as well, and becomes ashamed of her ways. What will happen when the truth comes out?