The Lightning Box (S01E06)

Piero has obtained a fascinating device known as a 'lightning box' that emits electric charges, which he intends to showcase. Intrigued, Leonardo 'borrows' it for his research, but Carlo, a cunning associate of Machiavelli, deceives Machiavelli with a fabricated tale and steals the box. In a race against time, Leonardo crafts a replica to fill the void, nearly getting caught during the switch. However, when Machiavelli realizes that Carlo has tricked him, he steps in to help recover the genuine lightning box before Piero notices any discrepancies.