Phineas is in the hospital. He wakes confused amd not sure why he is in a hospital.
Hey ferb who are they? He sees Isabella amd Candce smiling at them
F= I think they are people who think they know us .
But we don't know them .
Yes but they keep saying things like I am your sister
O well I don't know them .
Yes we don't know why they don't know us . They didn't even get knocked out that hard in the accident.
I think they know us but are playing with us .
Or they really don't us .
Phineas who am I ?
Your a girl who is crazy who thinks I am dating her
I am Isabella
Whi am ferb ?
I don't know but your hot !
I am girlfriend!
Who am I ? Radom dude. You eat a of lot chips !
I am not random ! I am Buferd your friend! I am hungry!
Eats more chips !
Who am I ? A nerd!
I am balljett !
Who am I ? A lady
I am your mom
Who am I ? A British dude
I am your dad
Whst about me Phineas  . You got  to know me !
All I know is that your a crazy girl who thinks i am related to her !
I am your sister !
My point was just made . I don't have a sister. I got a brother
F = ! You are all nuts!
Everyone glares at ferb! 
C= Phineas tell him we are not nuts
P = nope .
C/ ok. Are sure you don't know me ?
We don't know you . I am sorry.
I = I love you !
P = What ?
I = Never mind Phineas!
P = I don't know you guys so those are my thoughts about you guys!
O wow. You are going to need a lot of help restoring memories.
Who is that ?
It's perry your pet
O cool Ferb we have a pet !

Should continue wity the story? This all I got so far !