Gawd, I can't. Crackfics are not supposed to make any sense. They're supposed to be funny, sometimes even corny and definitely nonsense. I never wrote anything sensible actually in all my 18 years. >.< This is meant for your eyes only. BTW, the storyline may go this way:
It starts when Ash catches a Ditto, who has a particular obsession on Pikachu. However, Pikachu doesn't like it. So Ditto would always sneak up to Pikachu every night and produce an egg, once every night. Now, when the 64th egg hatches, Ash finds out the Pichu is bestowed with mysterious powers, flying, morphing, stalking and more. Ash tries to put up with it, but after a few days, gives up. He happens to meet a particularly violent young woman named Diane who herself is a contradiction. Ash happily gives up flyingpichu64 to her, but little did Diane and Ash know that it was about to get worse...