The squirrel
France is being swamped by counterfeit bills that are being made by a ring in the US. A beautiful female member of the French gang circulating the bills negotiates a deal with the counterfeiters' ringleader in the US, and in so doing falls in love with a returning US soldier who has his own reasons for trying to destroy the gang.
A forerunner of "12 Chairs", so to say. Before the trip to Berlin Herr Schnirpel hides his money in the cushion of the sofa. When he returns, WWI is broken out, Russian troops have occupied his hometown and the money is gone...