Ken lives in a public housing estate where the shape of the building is like the Chinese character “well”. He lives with his family in harmony. One day, Ken witnessed someone jump over from the building and kill herself. It was a haunting moment for a seven-year-old kid like Ken. No matter how hard his parents tried, Ken still could not forget this nightmare. One day, he met the little girl, who also witnessed the incident, in the well again. They told each other their own shocking experience through their paintings on the wall…