A few months after Arfenhouse 3 was released, preparation for Arfenhouse 4 was under way. The original version of AH4 (titled Arfenhouse Z) presented nothing new and innovative to the series, but after being revamped, AH4 is a sidestory that goes beyond what anyone wanted to know.
A year after the events in Arfenhouse 3, a new threat faces the Housefighters: Billy's dad, out for revenge against what happened to his son. Moreover, Housemaster can't find his pants. These problems lead Housemaster and the gang out of their backyard and into the world, and what the story evolves into is something that nobody could ever conceive, thankfully.
The first DISC takes the player through half of the game and ends at a climactic point in the storyline. Includes one hidden ending.