In 1937, China fell into chaos, and the country's future hung on a thread.
He is the director of the party-state's underground intelligence department; she is a peerless female spy trained by the Communist Party.
In troubled times, family feuds and the love of children are intertwined.
Tangled between loyalty and ideals, struggling between beauty and responsibility, crying in blood and tears.
Was it the smile he evoked that charmed Hongyan, or was it the smile on her lips that confused Jiangshan?