One day, Phineas, Ferb, and their friends were riding the Coolest Coaster Ever, a self-made rollercoaster ride specifically crafted to be as fun as possible. Of course, with making and riding a rollercoaster, there are possible dangerous repercussions, and for this Candace sought to alert her mom of her little brother’s activities. At this point, she and her mother were at the supermarket, and Candace was trying to pull her out so she could see the boys’ coaster, which was in plain view in the parking lot. Isabella joined her compadres and joined in song: