Phineas and Ferb's Halloween Special

One summer day it's raining and Phineas and Ferb remember their pasted Halloween:                                      It's Halloween in Danville and the alarm goes off ... (bzzzz), Phineas Flynn wakes up and wakes his brother and says, "Ferb's Halloween, and what we are doing today ... well the truth is that I do not know .... but I'll think of something quite sure, "Candace thereupon enter the door ready to fight their brothers, when, suddenly, Stacy, dressed in" Heishan "flame heard that saying that Jeremy is going to ask out for Halloween, then, Candace goes to her room excited. After this, Phineas Flynn said: "Too bad we already do more and we can not continue to enjoy Halloween much longer ... this has to be our best Halloween ever ... I have it so that when we dress up monsters building a sophisticated machine that turns us into monsters, I'm going to prepare the machine, you ask yourself where Perry "and Ferb replied:" Why do not we do the opposite? "Phineas and adds:" okay, if I look forward to you ... Where is Perry?.