Isabella and the Fireside Girls get a llama and name it Larry, so Phineas and Ferb also build a little barn for him while Candace is at camp. Doofenshmirtz seeks the area of mimes. (in the boys' back yard, Phineas and Ferb are hanging in their tree and Perry is sitting on the top of the tree) Phineas: So, what should we do today? (Isabella enters the yard and behind her are the Fireside Girls) Isabella: Whatcha doin'? Phineas: To be honest, I don't know. Isabella: Well, the Fireside Girls just got a llama for our 'Adopt a Crazy Pet' patch, and he needs a house! Ferb: Let's make a barn, then.