In the spring of 1945, 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!

An old mansion, sealed for years, re-opens as a museum. A ghost is sighted by the museum's guide, our heroine, who has fallen for a social outcast, a scientist obsessed with finding ghosts with his machines.