From order to spontaneity! This story portrays the transformation of Mr. Bérard, a meticulous, orderly man whose life is disrupted by the unexpected arrival of a hippopotamus named Arthur. His struggle against chaos – and his discovery of lightness through an unlikely friendship filled with tender and comical moments – highlights the importance of embracing change, the joy of shared moments, and the power of emotions. A charming book that invites fantasy and gentleness into a buttoned-up world!