Aidan, Michael, Patrick and Niall face new challenges as their Macready's Bridge band suffers a reversal in fortune. With declining album sales and decreasing bookings, their ability to hold their band together is uncertain at best. In addition, they each must navigate new issues at home. Will Michael's chance at the solo career he's always dreamed of draw him away from the band? Will Aidan lose Fionna as new opportunities in her art career...