In this Night of the Living Dead-inspired special, Doofenshmirtz's latest "-inator" accidentally turns the citizens of Danville into contagious mindless repulsive pharmacists who run rampant all over town. Agent P and the kids must work together to save Danville and avoid becoming mindless repulsive pharmacists themselves.
Phineas and Isabella bouncing together.
Isabella pushes Phineas down to talk to him.
Isabella leading up to her confession.
Isabella hears the scream of Mrs. Feyerside.
Isabella holds off on telling Phineas her feelings to help Mrs. Feyerside.
"What's everybody running from?"
"Well, that sure wiggles my biscuits."
The boys hide from the Pharmacists.
The boys escaping the Pharmacists.
Doofenshmirtz realizes that he now has an army of him.
Ferb showing that cell phone networks were still up.
But not for long as the power goes out in Danville.
Phineas freaks out upon hearing that Isabella wasn't among them anymore.
Phineas and Isabella watch helplessly as the Fireside Girls become infected.
Phineas stops Isabella from going outside to help the infected Fireside Girls.
Phineas and Isabella are startled by a Pharmacist.
Phineas checking if Isabella was okay.
Phineas asks Buford if he is alright.
"Come on, you freaks! Fresh meat!"
Agent B, transformed into a mindless zombie pharmacist, sneaks up on Doofenshmirtz in his chopper.
Stacy is oblivious to the Doofen-zombie attack while watching her Grievence movie marathon.
Candace looks for parts to rebuild the Repulse-inator.
Phineas rejects the "Self-Destruct" button from Doof.
Dr. Doofenshmirtz and Candace getting ready to fight.
Candace getting a little annoyed with Dr. Doofenshmirtz.
Dr. Doofenshmirtz looks at Vanessa.
"Well, everyone else was dressing up".
Heinz, Candace, and Vanessa stand in front of the incoming Pharmacists.
Candace asking if the scale models were worth building.
Candace is transformed into a mindless Pharmacist.
Perry starts to transform into a Doof-Zombie.
"No! Not Perry the Platypus!"
Dr. Doofenshmirtz watches Vanessa turning into a repulsive pharmacist.
Phineas and Isabella turn to see Doofenshmirtz yelling.
"I've had enough of you me's!"
Phineas and Isabella and Ferb see Dr. Doofenshmirtz taking his clothes off.
"All right, you freaks! Fresh meat!"
Phineas states the similarity between the sacrifice of Buford and the sacrifice of Doofenshmirtz.
Isabella wonders what was it all about.
Isabella, Phineas, and Ferb are getting closer to the water tower.
Isabella takes a look down.
Isabella notices the massive horde of Pharmacists below them.
The line begins to break.
Phineas looks at the top, stating that they have to make it.
The three run up the stairs of the water tower.
Isabella and Phineas and Ferb see more pharmacists ahead of them...
Phineas, Ferb, and Isabella are trapped.
Phineas and Isabella watch as Ferb sacrifices himself to allow them to continue.
Ferb transforms into a repulsive Pharmacist.
Isabella stops Phineas from touching an infected Ferb.
Isabella once again holds Phineas back.
Isabella states that the only way to help Ferb is to keep moving.
Phineas and Isabella continues to run up the water tower.
"...There's something I need to tell you".
Phineas and Isabella climb up the ladder to reach the Vortex Sprayer.
Isabella runs to express her feelings to Phineas.
Isabella yells out, "I like you!"
Phineas misunderstands and takes it as a friendly statement.
Isabella clears up what she meant.
Isabella confesses her feelings to Phineas.
Phineas begins his response.
Isabella awaits Phineas's response.
A Pharmacist reaches for Isabella.
Phineas lunges at the Pharmacist creeping up on Isabella.
Phineas is enveloped by the static that is responsible for the outbreak.
Phineas struggles to face Isabella.
Phineas tells Isabella to go as he transforms.
Phineas struggles to cope with the infection.
Phineas is turned into a repulsive Pharmacist.
Isabella, saddened at the loss of Phineas, says, "Oh, Phineas."
Isabella watches as Phineas is completely transformed.
"Get it together, Fireside Girl."
"It's up to you save Phineas."
Isabella is about to activate the Vortex Sprayer.
But she gets infected before she can do it.
Isabella begins to transform into a repulsive pharmacist.
The Vortex Sprayer sprays water all over Danville.
Some citizens and the Fireside Girls turn back to normal.
Phineas and Isabella recover from being infected with no memory of her confession.
"I remember building the Vortex Sprayer..."