In a world where reality and fantasy intertwine, a young boy named Bart Collins lives trapped in an oppressive home under the strict supervision of his mother and the wicked Dr. Terwilliker, an eccentric and authoritarian composer. Bart yearns to be free and dreams of becoming a pianist, but his life becomes complicated when Dr. T, obsessed with creating the masterpiece of his life, decides to make him his apprentice.
Everything takes a surreal turn when, after a night of insomnia, Bart finds himself trapped in a vivid and colorful dream where Dr. T's house transforms into a gigantic piano. In this world of musical madness, the young boy is swept into a realm of peculiar melodies and rhythms, where each room of the piano becomes a labyrinth filled with absurd situations and eccentric characters. Moreover, he meets a group of unusual prisoners who, like him, are seeking to escape from Dr. T's clutches.
With his wit and musical talent, Bart teams up with his new friends to devise a bold plan for freedom. The sequences filled with captivating musical numbers and dreamlike visions culminate in an epic struggle between unleashed creativity and the tyranny of control. On this surreal journey, Bart must find his voice and learn to confront his fears, all while moving to the rhythm of a fantastic symphony. A wild adventure that defies the conventions of reality!