[s1e1] Rollercoaster/candace Loses Her Head -

: Candace initiates her endless quest to "bust" her brothers by trying to show their mother, Linda, the massive coaster.

: The invention conveniently vanishes just as Linda arrives, a staple "helpful" plot device usually caused by Dr. Doofensmirtz's antics. [S1E1] Rollercoaster/Candace Loses Her Head

: Phineas and Ferb begin their summer by building a logic-defying rollercoaster in their backyard, setting the "big project" template for the series. : Candace initiates her endless quest to "bust"

In the pilot episode of Phineas and Ferb , several "helpful" recurring features and tropes of the series are established: [S1E1] Rollercoaster/Candace Loses Her Head