While the cargo ship Wasimaru was sailing in the Pacific, it received the SOS signal from the ship in distress and went to the rescue. After arriving at the scene, they found only a box with a black ribbon wreath on it, and then the Kazimaru was hit by a torpedo and sank. The crew members drifted in a small boat and found the tragic condition of boat No. 2. Maruo left a suicide note "Don't get close to the ghost ship." After that, the ghost ship appeared again. Director Furuya led the expedition team to board the ghost ship and found signs of beasts raging on the ship. So why did the ghost ship attack Kazimaru? How did the beast get on board? What kind of horrific encounter did Maruo and others experience on the ship? Also, what is the origin of that strange submarine?
