La Candace-Cabra: The boys set out to prove the existence of the elusive Chupacabra to the world, but Candace can't even stand up the wait and first just needs some to prove it to their mother. Meanwhile, Doofenshmirtz has a lot of brilliant ideas coming from him to use his device called "Switch-Place-inator " to help remove unwanted hair from one person and then give it to an another person so that he can in turn sell his hair growth toxic. Happy Birthday, Isabella: It's Isabella's Birthday, and Phineas, Ferb and the rest of the gang celebrate it in a really big way, complete with a giant Birthday cake and piñatas for Isabella's Birthday. Well, to Isabella however, all that she really wants is to be alone with Phineas. Always that she loves him a lot. Meanwhile, Doofenshmirtz installs his newest invention, Bugs-Me-inator onto an evil bug bus and it drives around Danville turning all things that it bugs him literally into such bugs.
—katlehomafanyolle