While a sinister crime organization known as FINIS plots against Bandette, the plucky young prowler receives a cryptic invitation to a midnight meeting with her greatest rival, the master thief Monsieur! Will Monsieur prove to be Bandette’s invaluable ally, or her backstabbing foe? And what will happen when a mysterious figure makes a surprise appearance at their rendezvous? Adventure! Machination! Presto!