When Fluttershy returned from a long trip, she discovers Angel has run off to the Everfree Forest. Giving chase without thinking, she soon loses her nerve. Luckily she stumbles into Zecora's shack, after which she gives the pegasus something to calm down. When Fluttershy wakes up back in Rarity's boutique, she is both relieved and confused. Only one of those emotions is going to go away when Rarity shows her the surprise in her basement.