Adams saves Will Boker, an entertainer and a magician, from drowning in a river, and takes him back to his cabin. Boker claims that he lost a bag full of his possessions when he was drowning, so Adams returns to the river and finds it, full of money. Boker claims that money fell in his hands by an accident, but what is the real truth?

Adams' cabin is in danger when a group of beavers, after their valley was destroyed by a forest fire, move into Adams' valley. Mad Jack suggests that Adams' should get rid of them, but he has another plan.

A tough old settler named and his daughter travel west into the rugged mountain territory, and after a small accident, they end up in Adams' cabin.

Ben and Adams prepare to welcome Mad Jack and Nakuma for the annual feast and celebration, but their preparation is interrupted when an Indian woman arrives, looking for help. Her daughter is missing.

An accident happens during an experimental ballon flight, which causes an unexpected visitor to end up in Adams' cabin--Monsieur Andre Gerard, a balloonist trying to speed up the Pony Express mail system to air mail.

Trapper Tom, a man known for trapping grizzly bears and taking them to the city zoo, returns to the mountain. Mad Jack realizes that he put new traps around the mountain, so Adams and Nakoma have to find Tom before he harms the mountain animals.

The hunters in the mountain are surprised when a lady appears at the mountains asking for information about black bears. It's Mrs. Kate Jackson, a writer. Adams finds out the truth--Kate is a widow, who's father was killed by black bears, and now she is here to avenge her fathers death.

The animals in the mountains are acting strange, and Mad Jack tells Adams about the reason---a big gorilla was seen in the forest. But, the gorilla will turns out to be something else.