Ready to seek out her own happiness and discover herself again, Heather Willette decides to leave her husband and rent a cottage on Nantucket. Everything is going perfectly, until her son Ross gets engaged and moves to Nantucket to work for his fiancé Kailee's family construction business instead of moving back home like he promised. Kailee has clashed with Heather since the day they met, but anything is possible under the summer sun and sea breeze of Nantucket, even reconciliation. When change comes sooner than either expected, Heather and Kailee must forge new bonds and fight for the future they want.