In 1958, the "Water Drop Project" was launched for basic research on submarine theory. Once the project was launched, it became a thorn in the side of the enemy agents, and in turn they made a sabotage plan code-named "Operation Rock". Police officer Pang Hongmei received the important task of protecting the "Water Drop Project", and in the midst of the obstacles set up by U.S. and Chiang Kai-shek agents, she rescued Ji Danyang, a patriotic scientist who has returned from America, from the hand…
In 1958, the "Water Drop Project" was launched for basic research on submarine theory. Once the project was launched, it became a thorn in the side of the enemy agents, and in turn they made a sabotage plan code-named "Operation Rock". Police officer Pang Hongmei received the important task of protecting the "Water Drop Project", and in the midst of the obstacles set up by U.S. and Chiang Kai-shek agents, she rescued Ji Danyang, a patriotic scientist who has returned from America, from the hand…