A company merger pushes Harmony Matthews out of a job at Suprasonic Records and back to her hometown. Mama couldn't be more thrilled to have Harmony back home and to help with the church's annual Holiday Hallelujah Chorus. Celebrity Melo D Star is a client of Harmony's and threatens to leave unless Harmony is back. Harmony has the perfect idea to showcase Melo D. Star and reinstate her career but when things go south, Harmony is tricked into auditioning for the lead solo in the chorus — directed by her scorned high school sweetheart, Kyle Noah. By Christmas Eve, Harmony and Kyle could be singing a different tune and harmonizing in the key of love.