Rookie Agent Rouge(2016)

Rookie Agent Rouge is a Chinese historical drama set in 1937 Shanghai, where a privileged banker's daughter and student activist named Lan Yan Zhi stumbles upon a classified letter from the Japanese Army. Mistaken for a spy by Zhou Yu Hao, an officer in the Chinese Army and her romantic interest, Yan Zhi must prove her loyalty to clear her name. She agrees to go undercover in her best friend's home to help Yu Hao hunt down a traitor known only as "Mister Traitor." As the investigation deepens, Yan Zhi faces an impossible choice when the evidence points toward someone in her own family. Caught between duty to her country and devotion to her loved ones, she must decide what loyalty truly means.