In the North Woods, Forester Charles Carter (Jason Robards Sr.) discovers that a Tussock Moth infection is threatening to devastate the great woods. This threatens the plans of Henry Mitchell (Douglass Dumbrille), who holds exclusive logging rights for the forest. Mitchell figures that if the moths infest and kill the trees, he can harvest all the dead trees, unencumbered by logging restrictions. When Carter tries to phone in the infestation threat, Mitchell covertly cuts the line, forcing Carter to ride into town to report the problem. Meanwhile along the trail, Gene Autry (Gene Autry) and Forester Joe Lucas (Jimmy Lloyd), who have been drinking, come across a mountain lion, and Gene fires several shots at the wild animal. Mitchell, who has been following the forester, uses the last shot as cover to shoot Carter in the back, leaving him where Autry will assume Carter was killed by his errant shot.
Ex-opera singer Helen Lorfield Winter (Jeanette MacDonald) rents a house in the small town of Brushy Gap, in the hills not too far from the Smokies, Blue Ridge, and Atlanta Georgia with her dog, Lassie, after the tragic death of her son. There she befriends Jerry, a young orphan (Claude Jarman Jr.). Growing attached to Jerry, but not wanting children so soon after the death of her own son, Helen leaves Brushy Gap to resume her singing career. While she is away, Jerry is caught in heavy rain returning Lassie home and develops pneumonia. Helen returns to Brushy Gap to find the owner of the house, Thomas Chandler (Lloyd Nolan), nursing Jerry back to health. Soon after Jerry has recovered, the orphanage catches on fire, and Lassie and Tom both rescue Jerry from the blaze. Helen then decides to adopt Jerry and remain in Brushy Gap.
Three escaped convicts led by Lednov kill three cowboys in Nevada and steal their clothes. They ride on looking for revenge against a rancher, Clay Phillips, who is warned by friend Jed Graham to get out of town.
Nearing the end of the 18th century, Napoleon's vast army is sailing towards the Irish coast. The national poet and freedom fighter who goes by the name of "The O'Flynn" is traveling back to the castle where he was born, when he encounters a coach being robbed by rogues. The leader of the outlaws is a man named Hendrigg. The robbery fails thanks to O'Flynn's efforts. He offers the passenger, Lady Benedetta, to come with him and take refuge in his castle.
Whaling ship captain Bering Joy (Lionel Barrymore) takes his grandson Jed (Dean Stockwell) on a whaling expedition in order to teach the young boy real life values such as honesty, courage, wisdom, fairness and hard work.
Sam Bass débarque dans une petite ville pour y trouver un emploi. Mal reçu par le sheriff du lieu qui n'aime pas les joueurs, il fait la connaissance de Calamity Jane et finit sur la pression de l'entourage à trouver un emploi chez ce même sheriff. Là, il tombe amoureux de la soeur de ce dernier et promet de l'épouser. Avant cela il souhaite faire fortune en acquérant un cheval de course qu'il inscrit à une compétition dans la ville d'Albuquerque. Il y mise non seulement son argent personnel mais aussi celui des ranchers pour lesquels il travaille après s'être querellé avec le sheriff. Malheureusement la course est truquée et Sam Bass doit maintenant récupérer les 16000 dollars correspondants. Il attaque le convoi qui transporte l'argent et est désormais poursuivi pour attaque à main armée, puis pour meurtre.
The fabled city of Dzamm in Africa is rumoured to be a land of wealth. Looking to exploit its rich resources, Captain Rawlings (Ralph "Eddie" Dunn) dispatches two of his henchmen (Wally West and George DeNomand) to find the hidden trail to the city. After killing a few natives of Dzamm along the way, the inept servants of Rawlings are eaten alive by a large pride of wild lions. Nearby, jungle roamer Jungle Jim (Johnny Weissmuller) receives Li Wanna, the daughter of Dzamm's chief religious official Zoron (Nelson Leigh). Wanna seeks Jungle Jim's help in fighting the mercenaries led by Rawlings. It is revealed that the rumour is indeed true—stashed in the temple of Dzamm are crates of precious stones. After hearing news of the murdered Dzamm natives, Jungle Jim and Wanna hurry to the scene, just to find the henchmen's corpses. Seeing the lions, the agile adventurer and Wanna climb up a tree to safety. An African elephant approaches, scaring the beastly cats away. Jungle Jim and Wanna return to Zoron's residence, where they strategically discuss a peaceful resolution to get rid of Rawlings and his team. They come to the conclusion that giving Rawlings a few diamonds is the best idea. Meanwhile, Wanna's brother Chot (Paul Marion) is hypnotised by businessman Calhoun's (Joseph Vitale) niece Norina (Myrna Dell). Chot falls in love with Norina and unknowingly spills some secrets of Dzamm to her. Norina and Calhoun turn out to be under Rawling's payroll.