Phineas and Ferb make a Mint Factory, but it is big, and like a maze. Isabella gets lost, so Phineas and Ferb try to save her. Isabella, Phineas, and Ferb get out safely. Dr. Doofenshmirtz makes a Math-Inator, because he is not good at Math.

Running Gags

The Too Young Line

Aren't you a little to young to make a Mint Factory?

No, no I'm not.

Ferb's Line

Isabella: Thanks.

Ferb: Why did we make a maze in the first place?

Whatcha Doin'?

Phineas: Whatcha doin'?

Isabella: Hey, that's my line!