The Summer I Turned Pretty meets People We Meet on Vacation in a YA second chance romance where the rules for getting over an ex turn out to be more complicated than they seem.

Seventeen-year-old volleyball star Kaylee Jordan lives a life of player rankings, constant training, and a carefully curated social media full of followers watching to see if she'll go pro out of high school like her famous mom. Her one refuge, and the thing she looks forward to every summer? The vacation her family spends in Malibu with the Freeman-Yus. This year, there’s only one problem: Kaylee and their son, Dean, dated for the past three months, and Kaylee just unceremoniously dumped him. Hoping to spare them the worst summer ever, Kaylee comes to Dean with her unconventional solution: she’s going to walk him through her rules for getting over an ex. When Dean grudgingly cooperates, Kaylee’s got her work cut out for her. But helping Dean follow her own rules starts becoming difficult when the pressures of Kaylee’s family legacy and perfect life start to feel less like a plan and more like a prison…and amid warm California nights and stolen laughs, Kaylee feels herself falling for Dean for the same reasons and some new ones. With their trip coming to an end, Kaylee has to make the complicated choice between doing what’s expected and taking a (second) chance on love.

Three months after she breaks up with her now ex, Dean, seventeen-year-old Kaylee and her family go on their annual vacation with Dean's family, and so to avoid an awkward trip, Kaylee tries to set some ground rules with him but finds herself falling for him all over again.