Henri devient alpiniste pour monter au sommet de la montagne et la gratter là où ça la démange.

Henry meets a friendly Mountain. He has a nasty itch that he just can't scratch and it's up to Henry to save the day. Henry becomes a Mountain Climber for the day, before making it to the top and scratching Mountain's itch.

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.