Summary: The series centers on the Duncan family, who are still adjusting to the birth of their fourth child, Charlotte "Charlie" Duncan (Mia Talerico). When parents Amy (Leigh-Allyn Baker), a nurse, and Bob (Eric Allan Kramer), an exterminator, return to work, they ask their three older children—PJ (Jason Dolley), Teddy (Bridgit Mendler), and Gabe (Bradley Steven Perry)— for help raising their little sist...