The first chapter is said to be realeased on Fanfiction.net and Phineas and Ferb Fanon Wiki on Sunday, April 18th, 2010
General Summary of A-Plot
To celebrate Ferb Fletcher's 11th birthday, the Ferb-Fletcher family along with Isabella Garcia Shapiro heads to Britain to visit Ferb's grandparents. When Ferb receives a letter to Hogwarts school of witchcraft and wizardry, the gang decides to build a mock Hogwarts so Ferb can experience what it's like to attend Hogwarts. Ferb, Phineas and Isabella take upon the roles of Harry Potter, Ronald Weasly and Hermione Granger of the Harry Potter series in a parody of the first Harry Potter novel.
General Summary of B-Plot
Dr. Heinz Doofensmirtz has also traveled to Britain at the same time as the Flynn-Fletcher family along with his daughter Vanessa to find a rare, powerful stone of dynomium, owned by Richard O' BRien . His nemesis, Perry the Platypus, peruses Doofensmirtz and attempts to foil his plans. In it, Dr. Doofenshmirtz costumes himself as Bill Murray, to go secret, but Perry costuimes him,self as Ricky Martin. When Dr. Doofenshmirtz goes to break, Perry comes in, takes the stone, and breaks it. When Dr. Doofenshmirtz comes and wanders where it is, OBrien comes and asks for the stone, ones seen it is broken, he guilts Dr. Doofenshmirtz, and beats him up, taking of his Bill Murray costume. Perry goes and takes his Ricky Martin clouth. A joke is that O'Brien doesn't hit Perry when Dr. Doof says it was him, realizing it was Perry saying "Martin would never do that.0"
Perry's entrance to his lair
Phineas: So Ferb. did you like you new birthday gift
Isabella: We can't say if you just don't show any emotion, don't you at least show any crying or cheering?
Ferb: Uh, No.
(A tear come out of his eye, but Ferb still shows his same face
Phineas: Hey, Ferb, is that a tear?
Ferb: (resisting; channging face) Uh, no
Ferb: excuse Me
(runs to the bathroom)
Richard O'Brien, the original voice of Phineas and Ferb's dad, appears here as himself.
This is the first Dr. Doofenshmirtz discovers Perry when he is costumed, first time Dr. Doofenshmirtz gets beaten up by someone else, and first time Ferb shows cryng emotions.