"Cece and Charlie are in love and a few weeks away from their summer wedding. But when Cece meets Charlie's best friend from college, Garrett, her long-held expectations for her future begin to crumble. As Garrett's gruff mask slips, Cece begins to anticipate the big day with dread as her feelings for Garrett become impossible to bury. And as she decides to follow her instincts, ditching her groom for his best man, she will alter the three of their lives forever, the events of that July reverberating through marriage, parenthood, and, in the end, across generations. Years later, Cece's daughter, Lana, and Charlie's son, Jasper, meet and become fast friends, finding themselves reunited again and again throughout their adolescence. Soon enough, they find themselves enacting their parents' mistakes, falling victim to duplicity and heartbreak, with age and mortality looming. With Montana's once-warm summers growing untenably hot, and the nearby lake all but drying up, obscured only by the ceaseless smoke of wildfires, Garrett's career as a wildlife researcher feels increasingly futile. As he watches Cece begin to lose herself, Charlie wonders whether he will ever find stability, especially with a son failing to adjust to the demands of adulthood." -- Provided by publisher.