In Part 2 of “The Lost Key,” Kasper and his friend Seppel search for the king’s missing key together. They finally track down the thief — but will they be able to outsmart it?

Kasperle, or Kasper, is a traditional puppet character from the German-speaking world, and “Kasperletheater” (Kasper shows) are performed in a manner similar to that of the UK’s “Punch and Judy.” Here, the King has lost the key to his beloved treasury—and, with the King’s promise of a reward, Kasper is eager to help him find it.