Harriette Powder is a school student who emits electromagnetic waves when her emotions run wild. The waves affects electronics such as cell phones, televisions, and computers. Her ability forces her family to move from one location to another. In the year 2017, the Powder family moves yet again. At school, a boy named Phineas Flynn notices her ability and asks if he can study her. Ferb's interest in Harrietteis met with jealousy and misunderstanding by Phineas Flynn's childhood friend, Isabella Garcia-Shapiro