This summer, Pumuckl and Eder have a lot going on: a turtle, a trip to the countryside and then neighbor Burke's birthday! Perhaps too much - because with so many events going on, the two of them are barely able to maintain their friendship. And when a big misunderstanding arises, everything changes between Eder and Pumuckl...

Across generations, a single instrument connects people from different eras - from an emigrating zither player in the Bavarian Forest in 1881, to the persecuted and the lovers of the 20th century, to a deaf young woman in present-day Munich - weaving them into a polyphonic, musical hymn to memory, loss, and solidarity.