Louie is a young Trumpeter Swan who was born without a voice. Unable to communicate, he can't express his love for Serena. His concerned father steals a trumpet and gives it to him. Befriending a human boy called Sam, Louie leaves home for a year, and tries to find work in the city, becoming a famous musician. He is determined to pay the music store owner for the trumpet, and win Serina's heart.