The summer before college, Auden meets the mysterious Eli, a fellow insomniac. While the seaside town of Colby sleeps, the two embark on nightly quests to help Auden experience the fun, carefree teen life she never knew she wanted.

Harmony is tricked into auditioning for the Holiday Chorus — directed by an ex-boyfriend. By Christmas Eve, they could be harmonizing in the key of love.