Cheng Lee, former inventor, physics professor and one-time pioneer in quantum mechanics is the owner of an accordion shop in London, England where he works as an instrument repairman. His business is failing, his beloved wife is gone, and he may soon be evicted. Now old and broken, all seems lost.
Then a small package is delivered, and it launches the shopkeeper on a crazy, magical journey. It's not all easy, though, and Cheng is faced with some hard decisions. When a constable knocks on the shop's door, Cheng's world is turned upside down. He'll need more than luck or an accordion to get out of this precarious situation.
Along the way, Cheng, his apprentice, and a group of magical, musical cohorts learn the meaning of loyalty, faith, and heroism, and the power of believing. How will this new perspective change Cheng Lee?