An alien named Meap crashes in Phineas and Ferb's backyard, and runs off. The boys try to find the cute alien, as Doofenshmirtz tries to find his old friend Balloony.

Episode Summary

Phineas and Ferb accidentally knock an alien spacecraft into their backyard while playing baseball. It falls into their backyard and they find Meap. Meap shows them a picture of a rogue alien and Phineas misinterprets it as his father. While they are busy trying to repair it, Candace discovers Meap, an alien she believes has been "roboticized" par Phineas and Ferb, and sets out to bust her brothers with the evidence...