An American general is kidnapped, presumably by Canadians. Rebecca, Phileas, Jules and Passepartout try to find him before a war starts between the US and Canada.

Along the way, they meet a friendly Native Canadian

Rebecca gets ideas that don't please Phileas

and muses

and is amazed

and has a temper 

and it gets worse

Chatsworth informs Phileas that he is helping to search for the missing general

They lose the Aurora but gain a canoe

Jules discovers

Passepartout invents

Rebecca is in her element 

Phileas' mood is bad

Tempers flare