Another dimension

I am so bad at summaries that I'm not even going to try. Basically Finn gets thrown into a portal which transports him to a parallel universe where he meets Fiona and cake and all the other gender swapped characters that he knew back at home in Ooo. Upon arriving he realizes that he will need the aid of Prince Bubblegum and Fiona to get back to his world. Would he stay or go? I hope that's enough but just in case it isn't, just read the first chapter. Trust me please.