1941, Tianjin French Concession. Lin Mo, the shopkeeper who appears to run the "Jingguzhai" antique shop, is actually an underground intelligence agent codenamed "Porcelain Craftsman". When a piece of intelligence about the Japanese army's secret military train accidentally flows into his shop, an undercurrent surrounding real and fake antiques, and a life-and-death espionage battle unfolds silently on the counter, in the alley, and on the late-night radio waves.
