Phineas And Ferb: Season 2, Episode 1 - ProjectFreeTV

2 - 1: The Lake Nose Monster

After taunting the boys for going to search for the "Lake Nose Monster", Candace begins freaking out on her lifeguard job, seeing the monster at every turn. Meanwhile, Dr. Doofenshmirtz tries to remove all the zinc from the lake, though even he's not sure why.