Phineas and Ferb (2007)

S01E45 Phineas and Ferb Get Busted

Title: Phineas and Ferb Caught in the Act Plot: Candace mocks her brothers for their quest to find the elusive "Lake Nose Monster," but soon her lifeguard duties turn chaotic as she believes she spots the creature lurking nearby. Simultaneously, Dr. Doofenshmirtz devises a plan to extract all the zinc from the lake, despite being uncertain about his own motives.