Phineas and Ferb head to the Tri-State area�s annual sci-fi/comic book convention to meet their hero, special effects guru Clive Addison. Their plan gets sidetracked when they�re swept into a duel between fantasy fans and sci-fi geeks. Meanwhile, Candace tries to keep secret that she�s a fan of Ducky Mo-Mo, another convention staple. Across the convention hall, Dr. Doofenshmirtz has taken television executive Jeff McGarland hostage so he can pitch him a show he�s developed, Doof �N� Puss.