""Rebecca's investigative work is clever and offbeat."--Chicago Sun-Times Rebecca is desperate to sell her inherited roller skating rink in small-town Indian Falls, and--finally--she has a buyer. She can't wait to head back to Chicago, especially now that her long delinquent father has blown back into town. But Lionel, her large-animal vet boyfriend, thinks she should stay put. And the gang at the Senior Center wants her to track down the thief who's...

After finding out that both their grandmother and Jeremy Johnson's grandma used to be skating champs, Phineas and Ferb build an awesome rink right in their backyard, and they set up a contest to see which granny can roller derby their way to the finish line the fastest.