I was watching "Perry lays an egg" when I came out with the idea. A female platypus comes and lives at Isabella's house. When Isa bring her platypus to the Flynn-Fletcheer house, Perry comes near her and chatters. She chatters back. Phineas sees that, he thinks that Perry likes Isa's new pet, and it's so wonderful and decides to make a new home for the platypuses as they are going to be a family soon. Well, I can't think of what's next. Anybody help?