The Doonkelberry Imperative

When Mom is out of Doonkelberries for her famous Doonkelberry pie, the boys set out to find some for her. Meanwhile, Perry and Dr. Doofenshmirtz find themselves across the ocean as Doofenshmirtz returns home to renew his Druelselsteinian driver’s license. Back in Danville, Candace is convinced she has discovered the answer to her busting problem.

Perry's entrance to his lair
None.

Background Information

 * Episode first revealed on page 10 of the Across the 2nd Dimension Official Movie Magazine in an interview with Dan and Swampy and was at the time only known as Unnamed Druelselstein Visit Episode.
 * First time Phineas, Ferb, and their friends go to Druelselstein.
 * http://tvlistings.zap2it.com/tv/phineas-and-ferb-quitest-day-ever-doonkleberry-imperative/EP009488470271

Cast

 * Vincent Martella as Phineas
 * Ashley Tisdale as Candace
 * Thomas Sangster as Ferb
 * Caroline Rhea as Mom
 * Mitchel Musso as Jeremy
 * Dan Povenmire as Dr. Doofenshmirtz
 * Jeff "Swampy" Marsh as Major Monogram
 * Richard O'Brien as Dad
 * Dee Bradley Baker as Perry
 * Jennifer Grey as Svetka
 * Olivia Olson as Vanessa