JoJo wishes Gran Gran could join her on a bike ride through the park because Gran Gran can't walk as fast as JoJo can pedal. Gran Gran has an old bike somewhere in the shed and decides to find it and fix it with JoJo's help. After a clean, a fix-up and a pump of the tyres, Gran Gran is ready to join JoJo on a bike ride through the park - with JoJo learning that it's important to take care of things to keep them working!