A catastrophic event has occurred somewhere in the future causing shifts in the timeline. Experts from the previously utopian future do not know the exact cause, but they do know it has something to do with the Heart of Maryland Men's Barbershop Chorus. These experts send one of their finest back to our time to enlist the help of two members of the Heart of Maryland. It has been determined that these two must travel through different moments in music history to gather lessons to help improve the capabilities of the Heart of Maryland Chorus. On their travels, the barbershop singers encounter other time travelers who help them on their quest. Will these two succeed in restoring the timeline and saving the world?