Duke has always wondered about his purpose in life. Who he was, what he was meant to do. He just found out that he's a father. At the same time, those who created Duke years ago have found him. Now Duke has to deal with fatherhood AND dark magic wielding Nazis.

In the fourth part of the CarousHELL saga, Duke tries to help Robbie understand growing up isn't scary. On a father/son vacation to a cabin in the woods, Robbie finds the Nekkomeownicon and tries to speak to his late mother. But these words are instead heard by The Leviathan and its demon horde.