In Nanking 1942, following a series of assassination attempts on officials of the Japanese-controlled puppet government, the Japanese spy chief Taketa gathers a group of suspects in a mansion house for questioning. A tense game of "cat and mouse" ensues as the Chinese espionage agent attempts to send out a crucial message while protecting their own identity. ~~ Adapted from the novel "Sound of Wind" (风声) by Mai Jia (麦家).