people in this band are all blind, they use server in army in spy force, after the war, they still live together as a team and build the band in order to keep the Chinese traditional classical music. The host wants to make a documentary for them ; about what they are doing and the story behind the band, thus, she joined the band ,take care of them. Young people may not interest in their song, because their song are very old and sing with dialect, there is not everyone can understand, however, as a kind of art, their songs should be keep and let more people know.