Perky young tourist Ruth Foster (Judith Barrett) turns up at Yellowstone National Park for a holiday, young ranger Dick Sherwood (Henry Hunter) chats her up but Ruth is really here to see her father James (Ralph Morgan). She hasn't seen him for eighteen years and is under the impression that he has been in Australia... but really he has been in San Quentin.
Eighteen years ago he stole a stack of money which he has hidden in the park. Now released he is after his money but so are others. When James Foster is found dead the truth about his past comes out and a hunt for the murderer is on.
Though as a murder mystery its no more than basic with a little too much silliness. Of course the ranger gets accused of murdered Ruth's old man (which puts a bit of a cloud on their budding romance for some reason). The film really scores with the scenery.