A dual timeline follows wartime radio operators risking their lives to transmit warnings in 1939 and modern students using tech to rescue them across time.
Director: Jiao Xiaoyu
He Zhengjun
Political Commissar
Zhang Duo
Lin Yuan
Shui Jiang
Zhou Tiesheng
Lai Xi
Professor
Yang Qingwen
Yoshifuji
Ziyu Guo
Chen Mo
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