Nineteen-year-old Kennedy Greene has lived in Portland, Oregon her whole life; she's not well-aquainted with warm, sandy beaches. So naturally, when her freshly-divorced parents decide to ship her off with her self-employed, free-spirited Aunt Layla in California for the summer, Kennedy doesn't know what to expect. Leaving all her friends back in Oregon, she doesn't know anyone in her aunt's small town. To top it all off, she doesn't know how to surf, a skill taught second only to walking in Ventura.
She anticipates a long and boring three months
Then, Kennedy meets Carter Williams, the nineteen-year-old narcissist who lives in the house next to Layla's. He's tan, sarcastic, ridiculously good-looking, and he finds a hobby in pushing Kennedy's buttons. She looks forward to avoiding him for the duration of her stay and instead focusing on fitting in with the other teenagers in Ventura. But when Carter discovers that Kennedy can't surf, he takes it upon himself to teach her, whether she wants him to or not.
This year Aleena and Levi Williams are staying at a friends' house in a quaint Massachusetts town for summer break. With their parents being divorced and never home the siblings are used to being alone.
Instead of spending the summer in a house filled with memories of their parents the twins decide to use their friend's beach house for the summer. Along with four of the friend's cousins. But anything is better than staying in their hometown. Even if it means a full house.
The twins make their way through new experiences, relationships, and make peace with their parents absence. Throughout the summer the twins meet a variety of new people- some of which they form life-changing relationships with. While some relationships are formed, others are broken.
A few months later the twins are in college with a few of the people they met over the summer. Everyone has to figure out how to move on from hurt feelings, form new relationships, and have fun.