Master thief Lupin III a.k.a. "The Wolf" and his right-hand gunman Jigen are hot on the trail of a counterfeiter who swindled them. When their search leads them to the secluded European country of Cagliostro, they find far more than they bargained for.
Lupin unwittingly attracts the attention of the nation's mysterious monarch when he tries to help a damsel in distress escape the Count's henchmen, and in the process stumbles upon the key to finding the lost fortune of Cagliostro!
With the help of the beautiful Fujiko, the Stoic Swordsman Goemon and the bumbling Interpol inspector Zanigata, Lupin undertakes to penetrate the defenses of the Count's fortress, rescue the girl, break-up a counterfeiting scheme, and escape with the hidden treasure of the Castle of Cagliostro!