The police try to recover the blueprint of a newly designed submarine after it is stolen by enemy spies.

---

Main Cast: Da Shichang, Gao Bo, Hong Rong, Shi Jiufeng, Xiang Mei, Xie Yibing, You Jia, Zhu Manfang, Mao Yongming, Wang Dinghua

Director: Shen Yaoting

Writer: Senhui Meng

Editor:

Cinematographer:

---

Popular Double Features