Phineas and Ferb head to the Tri-State areaβs annual sci-fi/comic book convention to meet their hero, special effects guru Clive Addison. Their plan gets sidetracked when theyβre swept into a duel between fantasy fans and sci-fi geeks. Meanwhile, Candace tries to keep secret that sheβs 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 heβs developed, Doof βNβ Puss.