Younger brother Martin shares his excitement about learning to pedal his tricycle. Throughout the story, Martin shares the value of friendship not only between siblings but also with others. In addition to the theme of friendship, the book has an implicit theme of Childhood Apraxia of Speech. This book continues two years after hi, My nAMe is MiLes, and four years after hi, My nAMe is MiLLy ended. Each of the books in the hi, My nAMe is series are written to standalone. However, the progression of Malcolm's recovery becomes more apparent when read sequentially.