Isabella loses her memory after being hit in the head with a rock while mountain climbing. Phineas and his friends try to help her remember everything she forgot.
( scene opens up to Phineas and Ferb's backyard with a climbing wall in the middle )
Isabella: Thanks for helping me with my "Climbing a mountain with with solo with few items in high wind" patch!
Phineas: No problem Isabella! We're going to wait down here if you need help. Ready?
( Isabella's line snaps completely and she starts to fall. Phineas manages to catch her at the last second.)
Buford: Let's put her on that very comfortable lawn chair! (As soon as Phineas puts her on the chair she wakes up)
Isabella: Wow this is a very comfortable chair!
Isabella: Who are you and who's "Isabella"?
Balijet: Oh no! She remember anything!
Phineas: This is serious! We've got to restore here memories! Ferb I know what else where going to do today!
Please Remember Me, Izzy by Phineas
Phineas (song) by Isabella
The Great Outdoors: Isabella is rock-climbing again. This is also the second time someone gets hit in the head with a rock.
Scenes from the following episodes are in the background during "Please Remember Me": Go West, Young Fanboy, "Summer Belongs to You", Grow Up Phineas Flynn, "Unfair Science Fair: Redux", The Day The Boys Stopped Building (Which is odd cuz Isabella wasn't in it.), "Rollercoaster the Musical", "The Great Indoors", "Canderemy", "Make Play".