When a shocking family secret is revealed, twentysomething journalist Cat Coombs finds herself falling into a dark spiral. Wild, glamorous nights out in London and raging hangovers the next day become her norm, leading to a terrible mistake one night while visiting family on the island of Nantucket. When she returns home, she confronts the unavoidable reality of her life and knows it's time to grow up. As the years pass, Cat is a struggling single mother, coping with a newfound sobriety, and determined to finally make amends. Traveling back to her past, to the family she left behind on Nantucket all those years ago, she may be able to earn their forgiveness, but in doing so she may risk the very people she loves the most.