The Phin Switcheroo

The Phin Switcheroo is where Phineas accidentally gets seperated by The Molecular seperator. An angry side, and a generally happy side get split into two.

Summary
Phineas and Ferb are digging through the garage, looking for old inventions to use. When they come across the molecular seperator. Phineas accidentally presses a button, and sees his negative clone run off.

Meanwhile, Perry is playing a video game in Phineas's room, he enters a cheat code specially created by Major Monogram himself. Up, Up, Down, Down, Down, R, R, B, B, A, START.

He is instantly teleported to his lab, where Major Monogram tells him about Doofenshmirtz's new Molecular Connector, copying an idea from Phineas and Ferb's old blog.

Perry looks at his lab screen and sees a mad phineas smashing everything while a calm, collected one chases him, bound to stop him. Perry shrugs and runs to Doofenshmirtz's lair.

Meanwhile, as Evil Phineas breaks everything, Normal Phineas discusses with Ferb what they should do. As the fireside girl Gretchen walks into their backyard she says "Whatc'ha doin?" Phineas had a crush on her, and she was the new leader after Isabella moved away. Gretchen, seeing double Phineas, slowly walks away.

Perry is trapped in a balloon in Doofenshmirtz's lair, while Doofenshmirtz explains about his new Molecular Connector-Inator. Perry sees a nail sticking out in the floor and pops his way out, causing a fight between Perry and Doofenshmirtz. Perry fires the molecular connector at Phineas's double and smashes the machine. Leaving on his hang glider.

In the backyard, Phineas is back to normal, as Perry flies in and walks out from behind the tree. Ending the episode.

Songs
Chasing The Double

Trivia
The Molecular-Seperator is used a third time.