When The Candymaker proposes that Logan, Miles, Philip, and Daisy go on a road trip to promote the new, winning Harmonicandy they uncover a decades-old secret that challenges them to trust themselves and determine what really matters.
When four twelve-year-olds, including Logan, who has grown up never leaving his parents' Life Is Sweet candy factory, compete in the Confectionary Association's annual contest, they unexpectedly become friends and uncover secrets about themselves during the process.