Pinkie pie has finally decided after foal sitting for the cakes that she wants to have a foal of her own but she doesn't like stallions so she finds another way to get a slightly larger foal. On a bright summer day twighlight walks out her door to have a letter thrown on her delivered to her by pinkie.though twighlight already has a good sense of what the letter is about she ask pinkie any way. Pinkie what's with the letter? It's a surprise party says pinkie while she is jumping up and down with a goofy grin on her face. Twighlight smiles and ask who is the party for? It's a surprise silly says pinkie as she hops of into the town.