'Pebble' tells the story of a young man who suffers from an incurable, rare disease. After living a hobo life in Beijing, he decides to go home.'Pebble' tells the story of a young man who suffers from an incurable, rare disease. After living a hobo life in Beijing, he decides to go home.'Pebble' tells the story of a young man who suffers from an incurable, rare disease. After living a hobo life in Beijing, he decides to go home.