This episode of Phineas and Ferb follows Candace's relentless attempts to 'bust' her brothers using traffic camera footage of their elaborate inventions, while Agent P embarks on a mission to retrieve the same footage to protect his secret identity. Simultaneously, Phineas and Ferb build the world's largest bowling ball, leading Candace on an accidental city-wide pinball adventure that ultimately thwarts Dr. Doofenshmirtz's latest evil scheme and helps Candace overcome her fear of heights.