The end of World War 2

What if what we knew about Germany surrendering causing the end of World War two is all a lie?

*Warning Possible Spoiler* 

While planning out season one of my Victorian Fantasy series, I came across a scene that will take part during WW2, The real reason for the end was because an army that was spread out through two dimensions broke out in the middle of Europe. Germany and those countries surrounding her had no hope to survive and battle there forces on their own. A tense and very fragile alliance was quickly made between all the countries of both worlds and they would work together to survive the coming darkness.

Well I must finish the rest of the series first but this is the plot plan for the end of series one of The Diaries Of James Purcell.