Childhood friends Mackensie, Parker, Laurel and Emmaline have formed a very successful wedding-planning business together. While helping thousands of happy couples to organise the biggest day of their lives, three of the four women have all found love themselves - but workaholic Parker remains resolutely single. Her business is her life and she devotes all her energies to it. But as she is forced to re-evaluate her friendships, Parker finds that someone is about to divert her focus...