Vicki's old school acquaintance, Ruth Hall, asks Vicki to fly her north into Canada so that she can nurse her injured brother. Vicki and Ruth run out of gas while over a remote part of Canada and are forced to land in the wilderness. They hike to a cabin in the woods which appears to be inhabited. The girls hide when two men arrive at the cabin arguing belligerently.
The girls deduce that the men are mink smugglers after overhearing their conversation. Much to their chagrin, the girls are discovered and become captives. After the men learn that Ruth is a nurse, they force her to care for their injured leader.
The girls find their every move under close scrutiny. How can they escape their captors?
The girls' chance for escape arrives once the two men leave the cabin with a shipment of mink furs. The girls must leave the men's injured leader behind. Vicki knows that she must come back to help the injured person and later returns with a Canadian Mountie. Vicki helps the Mountie capture the smugglers and at the same time reveals the truth behind an old legend about a haunted waterfall.
