During a heatwave in Danville at the summer holiday, Candace ends up breaking her leg when she falls off from her room, intending to dive in a swimming pool that Phineas & Ferb had set up. She is forced to remain in her room for the rest of the summer when the leg heals, becoming increasingly paranoid in isolation after Suzy gives her a telescope. Candace then spies on neighbors with a telescope. She finds the view boring until she thinks she sees Jeremy murdering his sister, Suzy. Did this really happen? Is Candace gonna find out about this?