Candace has a new dream and that’s being a top supermodel. While she is watching her favorite designer Gaston LaMode run his fashion line down the runway, she gets even more excited at the thought of it. Phineas walks in and, after a small talk with Candace, decides that he and Ferb are going to go into the fashion world as well, but as designers.
Meanwhile, Perry makes his escape and heads over to see what Doofenshmirtz is up to with a bunch of copying machines and ink cartridges.
Phineas and Ferb start designing and creating their “Forever Summer” line, with the help of Isabella and the fire side scouts.
Agent P busts through the walls of Doofenshmirtz’s hideout where he soon gets captured, with duct tape no less. Doofenshmirtz explains that he is going to create an army of clones so that he will no longer have to wait in line ever again.
Candace dreams of being a supermodel are closer than she thinks after Gaston Lamode, the famous designer, chooses her to be one of his models, due to the fact of her averagely long neck. This is where Phineas and Ferb pitch their “Forever Summer” fashion line and it’s a huge success. Candace can’t believe this is happening to her and runs off the stage in a desperate attempt to get Mom.
After several failed attempts Doofenshmirtz finally creates an army of clones to do his bidding. One by one they jump out of the plane and land at the mall. There Doofenshmirtz’s look becomes the new hit fashion trend and everyone runs off to change, the Phineas and Ferb line is so 2 minutes and 30 seconds ago. Meanwhile, the real Doofenshmirtz is still gloating over his successful plan until one of his rejected clones interrupts him. This makes Doofenshmirtz both mad and confused as he presses the Delete All button, by mistake, causing all of his clones to vanish. Perry takes this as an advantage and jumps out of the plane taking Doofenshmirtz with him. Agent P makes his heroic escape with the help of his parachute.
At the mall everyone is wearing the new Doofenshmirtz inspired look when Candace finally gets a hold of Mom. Mom, like always, doesn’t believe her and they all go get some lunch at the food court.
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