Season 3, Episode 58 When Worlds Collide
First Aired: September 14, 2012
Phineas and Ferb try to prevent an out-of-control planet from smashing into Danville. Meanwhile, Doofenshmirtz attempts to steal the world's largest ball of twine.
Cast & Details See all »
- Premiered: August 17, 2007
- Rating: TV-G
- Premise: Animated adventures of two stepbrothers who build outlandish inventions in their backyard while their pet platypus, Perry, carries out secret spy missions. (more)