Henri devient pilote de course pour participer à la grande course.

Henry meets a friendly Racing Car. Henry learns about engines and finds out that Racing Car has never finished a race. Henry becomes a Racing Driver for the day, races around the track, & even manages to help Race Car finish his first race.

Henry is a young boy who desires to learn something new in his everyday life. In each episode, he meets a new object and his imagination comes to life as he learns more with each new encounter. Henry creates so many friendships and everyone he meets is eager to help him find the answers to every new question.