Toppling is about a boy named John who loves making domino topples with his friends. John has four friends: Christian, Joseph, Tran, and Dominic. Dominic, who is his best friend, gets sick at school and is taken back home. When he doesnt come back the next few days, he and his friends get worried. One day, their teacher, Mrs. Timms, says that Dominic is in the hospital and wont come back to school for a few months. The pressure is on as John copes with Ky, the school bully, the Domino Topples paper that is due and the fact that his best friend may be dying.