When Stanley wishes that he had a tricycle to ride like his friend Jack, Stanley's grandfather helps him build something better.

Afraid of his new mountain bike, third-grader Marvin finds himself in a desperate situation when he accepts a challenge to ride down Suicide Hill.

Vera is riding her new bicycle in the school yard, when she discovers there's no one there to help her brake to stop herself.

Disappointed that she didn't get a bicycle for her birthday, five- year-old Lotta, confident that she knows how to ride, decidesto take matters into her own hands and borrow the neighbor's bicycle. Disappointed that she didn't get a bicycle for her birthday, five-year-old Lotta, confident that she knows how to ride, decides to take matters into her own hands and borrow the neighbor's bicycle.

"When Mabel has a big idea and Maddie faces a big challenge, the sisters know they'll succeed together. But how long will it take? Who gets to decide? If you don't get it the first time, how many times do you try again? Frmo a risky big idea to learning to ride a bike, the sisters are there for each other through failures and frustration, together for the wait as well as the reward"--Back cover.

The twins' father offers to teach them to ride their bikes without the training wheels--and with perseverance, and despite a lot of wobbling, the two soon succeed.