The story of Shin Devilman is supposed to take place between the second and third volume of the original Devilman series. Here we have Akira and Ryo who mysteriously manage to travel in time. Where they discover the have been sent back to dispatch demons that are invading history to end humanity. They visit several time periods including pre-World War Vienna, ancient Greece, France during the Hundred Years' War, Rococo period France, and wild west America. The end of this series also includes a new epilogue for the Devilman series.

• NOTE: The US official release of Devilman is based on a version that has both the main Devilman manga and Shin Devilman.