User blog comment:AgentP/Phineas and Ferb movie/@comment-1393425-20100124095134

I didn't really want to share my ideas with anyone, but because I'm bored... I got the idea a while ago.

It starts at night before the last day of summer. Perry gets called by the O.W.C.A, so he goes to see what his mission is. Monogram tells him Doof made a new -inator, but they don't really know what it is. Perry goes to Doof, and Doof tells him (after imprisoning him, of course) that he's annoyed by happiness of all people in the Tri-State Area. His little rant is ended as he shows his new invention, Depressoinator (couldn't come up with a better name). He tells Perry that if a happy person gets zapped with it, they become depressed. Perry's watching in shock as Doofenshmirtz pushes the button and... nothing. Nothing happened. Doof is confused as to why it is. He sets Perry free, so Perry goes back home. Doof wonders why didn't it work. He comes up to his inator, but he slips and falls over. The Depressoinator fires a laser. Apparently, it reacted to noise. The last day of summer comes, Phineas and Ferb wake up. In the calendar, the day is marked... as Phineas's birthday. His family is eager to wish him happy b-day in the morning, but he isn't too happy about that. Later he's still quite depressed and doesn't react too well to anything. Ferb and Candace come up with an idea to make a "Farewell Summer" concert which is also a "Happy Birthday" concert, but they need Phineas to leave for a while. Isabella is eager to help and takes Phineas's hand and guides him to a forest. She leads him through it to reveal a "romantic dinner". However, Phineas gets really angry and leaves (because of the depression, duh). Perry connects the facts and goes to Doof to beat him up and destroy the Depressoinator. However, he finds out Doof has already taken care of it and it's in pieces. Perry takes the piece that powered the inator and secretly brings it home. Ferb, Candace, Buford, Baljeet, Fireside Girls and all other kids in the neighbourhood set up the stage. When Ferb was checking the guitar, Perry noticed the piece reacted to music. When nobody watches, he connects the piece to the intruments and set it on "reverse". Phineas comes home in the evening and everyone surprise him as he comes into the backyard. He gets angry, but stands in the first row, between some other kids. Candace, Ferb, Isabella with the Fireside Girls, Buford and Baljeet enter with instruments and they sing a very long song (with everyone having [except Fireside Girls, who are background singers] a solo in it). Because of the inator set on reverse, the waves make Phineas a happy person again, and when the song ends, he comes to hug everyone (group hug!) and apologizes for how he acted all the day. He then states it was the best summer ever. Perry appears on stage, with everyone saying "Oh, there you are, Perry!" and the story ends.