Leonardo is ready to create his greatest masterpiece, the Armonia del Mondo (World's Harmony), and uses a futuristic device to entrap all the Italians inside the Sogno Italiano, replicating at the same time his consciousness in the mind of every inhabitant of Italy. Inside this dream, he defies every Italian to beat him in the thing he's most versed, and if the challenger prevails, he'll be able to wake up, or otherwise his/her consciousness will be "reprogrammed" based on Leonardo's own, with the final objective to create a nation of geniuses with the necessary knowledge to create a new world. Lupin, Jigen, Goemon, Fujiko, Nyx and Zenigata manage to defeat Leonardo, but when he arrives in San Marino, Lupin discovers that all the other Italians, starting from Rebecca, have instead failed, and soon they'll reawaken with new personalities. Lupin then uses Leonardo's device to replicate even his own consciousness inside Rebecca's mind, where Lupin and Leonardo fight for control.