French Canadian trapper Victor Raoul returns to the trading post at St. Ignace to find a rival for the affections of Yvonne, his business partner's daughter, in the Marquis Courtière, Parisian representative of the fur company.
Bart Carson is in love with Lou and even goes to jail to save Walter A. Walker, a man she says is her brother but who is really a husband who has deserted his wife and two children.
Buck, who is preparing to enter a theological seminary, aids his brother and some friends who are fleeing from justice, and thus implicated he is sent to prison for 2 years.
La tempesta in un cranio (Tempest in a Cranium) is an anarchic, quasi-surreal Italian comedy of multiple delights in which the timorous scion of a wealthy family is gaslit by his friends in order to prove that his fears of hereditary insanity are hogwash.