Doofenshmirtz is tired of not having a girlfriend so he makes and invention that turns the man into woman (The Change-Inator II) so he coul´d have more posibilities. Doofenshmirtz turns Perry into an atractive human woman and fall in love each other. And decide to marry. Meanwhile Phineas and Ferb find a platypus dead and beliving that it's Perry decide to make him a funeral.
The "Too Young line"
Ferb:Well, Perry was more than a pet it was our friend and...(cryes) (Perry appears) Oh, there you are
Evil Doofenshmirtz INC
Doofenshmirtz in his bed cryes for the lost of his love
- Xena: Human girl Perry resembles to Lucy Lawless
- Vincent Martella as Phineas
- Ashley Tisdale as Candace
- Thomas Sangster as Ferb
- Alyson Stoner as Isabella
- Dan Povenmire as Doofenshmirtz
- Dee Bradley Baker as Perry
- Lucy Lawless as Human Perry
- Jeff "Swampy" Marsh as Major Monogram