Board Thread:Questions and Answers/@comment-26349008-20151029051205

the basic premise would be this:

During a Time-travel mishap in the 1930's, Rigby accidentally pushes the British prime minister onto the path of an oncoming taxi, accidentally killing him. When our duo return to the present they find that Rigby's actions actually resulted in the Axis winning WW2 and in this alternate present the park and the city it is located in is a super-advanced dieselpunk and german speaking metropolis where almost everyone is white skinned with blond hair and blue eyes, nasty looking robots patrol the streets and slackers are not accepted. At first they try to fit in but when their old habits (and the Axis labelling the two as inferior) wind up getting them into hot water. Mordecai and Rigby are picked up by an underground resistance force. among the resistance fighters would be an alternate versions of their friends and family. With the help of the resistance fighters (and the revelation that they are slowly ceasing to exist in this timeline) Mordecai and Rigby must go back and undo the damage they wrought on the timeline or they both will be stuck in this present and will cease to exist.

The songs featured in such a special would be the german dub parody songs from the game, "Wolfenstein, The New Order".  