Sassy, who cannot sing, wants to be in the school musical, but must first prove to her music teacher that she can make a positive difference in the program.
Life is usually easy for popular fifth grader Hart Evans, but when his music teacher puts him in charge of the holiday concert, Hart must use all of his leadership skills to unite the other students.
Little Rat loves the violin but hates to practice, until her teacher suggests she perform a duet with one of the advanced students at the holiday concert.