Over the next two weeks Phineas and Isabella were happy to be with each other. Candace is still finding a way to get Phineas and Ferb back together but nothing worked. Ferb is busy reading books that he missed reading. Stacy and Jeremy even helped Candace with their plan but Phineas wants to stay with Isabella. Meanwhile, Dr. Doofenshmirtz is able to trap Perry in a platypus-sized can (note that he was captured off-screen, because imagining Norm looking back to how Perry was captured and Perry not wanting to "talk" about it would be hilarious). He explains his reason for making the Argue-inator, which is simple but actually brilliant: if everyone is busy fighting with each other, it would create anarchy, giving Dr. Doofenshmirtz time to sneak his way into power. Perry attempts to break out using a can opener that was in his hat (what? It could happen. C'mon, he had some kind of opera hat in one episode, where did that come from?). He is unable to, because Norm notices, and vaporizes the object, much to Perry's assumed dismay. However, while Norm isn't looking, he reveals to have a back up can opener. Phineas and Ferb are still living in separate house and missed being by the being-friendly Inator (that Perry made) and everyone got along expect Phineas and Ferb.