In 1935, Japan's Unit 731 conducts inhumane experiments. A doctor tries to free prisoners, including his fiancée, from the camp while witnessing atrocities. The film depicts the graphic events at the camp without censorship.

In the spring of 1935, Japan established a secret base, Unit 731 in Manchuria, where many innocent Chinese, Korean and Mongolian people were killed in grotesque experiments. An idealistic young doctor , Morishima, is horrified by the experiments being performed in the camp and when his fiancée arrives disguised as a Chinese prisoner he sets out to liberate the camp. A docudrama sequel to the notorious Men Behind the Sun, which pulls no punches when it comes to delivering the shocks!—<[email protected]>