A battle between modern-day spies and Edo Period shinobi begins! "Predator" is an intelligence agency organized in modern Japan. Ichinami and Sankai, members of the organization, are ordered to retrieve a small nuclear weapon. However, during their mission, they're suddenly enveloped in a blinding light. The next thing they know, they find themselves in a completely different landscape than the one they were in before. It's the Edo Period. The two of them had traveled back in time with a small core! The person behind the time slip was Ieyasu Tokugawa. He was planning to conquer the world and obtain the small core. This is where the story begins. A battle between modern Japanese spies and a ninja army led by Ieyasu's vassal, Hattori Hanzo. Don't miss this covert battle that transcends time and space!