An espionage thriller set in the 1950s and adapted from the novel "Year Suan/Plot Againt" by May Jia. Tony Leung Chiu Wai plays a blind man who works for a piano tuner. He is recruited for a spy mission because of his exceptional hearing.

About the early fifties of last century , war mantle stretched sheets mysterious vital lives for the better of the national power authority , " the seven hundred and one of interlocking where the enemy into an unprecedented crisis , reverse the situation , is actually an unknown blind from the private sector , because he the war situation suddenly reversed, and launched a series of soul - stirring story around this strange man ......