Unlike other cygnets, Louis, the trumpeter swan, cannot utter a sound. But with the encouragement of his father, Louis sets out to overcome his problem. One way of doing this Louis decides, is to learn to read and write and so he sets off to Montana to find his friend Sam Beaver. Louis goes to school with him and learns to read and write, but when he returns to the lakes and falls in love with the beautiful Serena, he is upset that Serena can't read his sign, which says 'I love you'. Once again his parents are determined to help him find a new way of expressing himself and it is his father who dreams up the brilliant solution that will put Louis firmly on the path to success and fulfilment.