Summary
The boys learn about one of Ferb's Victorian ancestors, Ferbgor and Dr. Phineastein, who once created a giant platypus monster for a "Monster Ball". Meanwhile while locked in his lab, Doofenshmirtz tells Perry a loosely connected story about his ancestor Dr. Jekyll Doofenshmirtz, and his failed attempts to make a potion that could turn himself into a monster.
Discuss! =D