▁with ▁Ch else a ▁( now ▁we aring ▁a ▁button ▁with ▁a ▁cow ' s ▁face ▁on ▁it ▁out ▁of ▁gu ilt ) ▁by ▁looking ▁inside ▁her ▁grand m other ' s ▁tr unk ▁and ▁comes ▁across ▁a ▁mag ical ▁book ▁with ▁instructions ▁on ▁a ▁wish ing ▁spell . ▁They ▁place ▁the ▁necessary ▁ing red ients ▁in ▁a ▁ca uld ron ▁and ▁cast ▁the ▁spell ▁to ▁get ▁invited ▁to ▁Al ana ' s ▁party . ▁After ▁a ▁hyp not ized ▁Al ana ▁confir ms ▁their ▁inv itations , ▁the ▁two ▁then ▁wish ▁to ▁be ▁the ▁most ▁popular ▁girls ▁at ▁the ▁party ▁and ▁win ▁the ▁cost ume ▁contest . ▁They ▁fail ▁to ▁notice ▁Ch else a ' s ▁button ▁fall ▁into ▁the ▁ca uld ron ▁during ▁their ▁inc ant ation ▁and ▁run ▁up st airs ▁to ▁prepare ▁their ▁cost umes . ▁ ▁While ▁looking ▁for ▁out f its , ▁they ▁are ▁hor r ified ▁to ▁find ▁that ▁their ▁bodies ▁possess ▁cow ▁ears ▁and ▁t ails . ▁Edd ie ▁comes ▁to ▁the ▁house ▁to ▁take ▁them ▁to ▁the ▁party , ▁but ▁they ▁force ▁him ▁to ▁leave ▁with ▁the ▁spell ▁book ▁as ▁they ▁start ▁mo o ing ▁sp or ad ically . ▁The ▁two ▁discover ▁that ▁they ▁are ▁turning ▁into ▁c ows ▁due ▁to ▁the ▁button ' s ▁inter ference ▁with ▁the ▁spell ▁and ▁cannot ▁reverse ▁the ▁process ▁without ▁the ▁book . ▁R aven ▁suggests ▁that ▁they ▁go ▁to ▁the ▁party ▁and ▁get ▁the ▁book ▁back ▁to ▁und o ▁the ▁spell , ▁fig uring ▁that ▁the