User blog comment:PerrythePlatypus/what happens in season 3.... You decide!!/@comment-3006892-20110213223800/@comment-5151799-20110213233805

Yep, and then they reconcile and decide to combine their inventions to create one big invention. And then Perry and Doofenshmirtz do something that ends up making the thing vanish before Candace can show her mom. You know how it goes.