The Harmony Heroes are back, and this time, they're bringing the world together in a holiday adventure! In the Harmony Heroes Holiday Special, Sunnyvale transforms into a global celebration of cultural traditions as Sofia, Olivia, Isabella, and David organize a dazzling holiday concert that unites their community.

With the help of the once-gruff Mr. and Mrs. Grumpington, the Harmony Heroes discover the true power of music to bridge divides, inspire connection, and celebrate the richness of cultures from around the world. As snow falls on Sunnyvale, the quartet proves that kindness, music, and belonging can bring light to even the darkest corners.

This enchanting holiday tale will captivate young readers and their families with its universal themes of acceptance, inclusion, and the joy of coming together, celebrating Thanksgiving, Diwali, Hanukkah, Christmas, Kwanzaa, New Year's and the Chinese New Year!