Exhausted veterinarian Morgan Pearce is feeling overworked and under-thanked, so when two favourite clients ask her to watch their special needs senior dog in their Nantucket home, she jumps at the chance. Her trip starts to feel like a real vacation when she begins falling for Nathan Keating, an irresistible entrepreneur. Just as the summer is shaping up to be the magical refresh she needs, a visit from her estranged brother and the discovery of who Nathan really is changes everything. Morgan finds herself at a crossroads, trying to determine if mistakes from the past must define the future.