Phineas, Candace and Ferb carry the only plot while Dr. Doofenshmirtz, Major Monogram and Perry only appear in a few scenes.
Candace's children in the future are named Xavier and Amanda, the names Candace mentioned in "The Best Lazy Day Ever" and "Swiss Family Phineas", along with a third child named Fred.
Second episode of Phineas and Ferb to have just one plot.
The present day Phineas and Ferb are only present for the first half of the episode and the end credits. The rest of the episode is focused on the Candace from the future with appearances of Phineas, Ferb and Candace from the past in "Rollercoaster".
Like her mother, Amanda is trying to bust her brothers, but instead of them doing awesome things, she tries to bust them for doing nothing.