After Pinkie Pie and Applejack had just finished baking their brand new batch of Cupcakes for the Sugarcube Corner Banquet, Pinkie tries to eat a one of the cupcakes she and Applejack made. But then she starts to realize how special this cupcake means to her, so instead of eating it… she befriends it and names it "Chuck." Twilight and the others start to notice that Pinkie Pie is hanging out with the cupcake and they find out from her that she's friends with it. Eventually, Pinkie's little friendship with the cupcake soon becomes a huge problem for her other friends…