After her husband’s sudden death, Carley Winsted is determined to keep her two daughters in their beloved home on Nantucket. To ease the family’s financial strain, she decides to transform their grand, historic house into a bed-and-breakfast. Not everyone, however, thinks this plan prudent or quite respectable—especially not Carley’s mother-in-law. Further complicating a myriad of challenges, a friend forces Carley to keep a secret that, if revealed, will undo families and friendships. And her late husband’s former law partner is making Carley confront an array of mixed feelings. Then, during a late-summer heat wave, the lives of Carley and her friends and family will be forever changed in entirely unexpected ways.