Phineas and Ferb (2007)

S3E47 Minor Monogram

As autumn approaches, Phineas and Ferb come up with the idea for "S'Fall," creating a vibrant realm filled with enormous leaf mounds and pumpkins. Meanwhile, at Evil Inc., Dr. Doofenshmirtz is guiding Rodrigo, an aspiring villain. However, Rodrigo's evil nature takes a turn for the worse when he manages to capture both Dr. Doofenshmirtz and Agent P. Now, it's up to Monty, Major Monogram's son, to step in and rescue them.