Archer Riley just wanted to get away for the summer before she was buried in textbooks during her final year of medical school. Niall Horan has always been comfortable splitting his time between his dog and his job as a firefighter in the small costal town he's lived in for years. When Archer and Niall meet, it seems like there's an invisible string tying them together, one that bypasses the fact that not only is there a difference between their ages... But the fact that Niall's best friend is none other than Ellis Riley. Archer's one and only older brother. Never have either of them been more sure about their feelings for each other, but summer can only last so long before August comes and slips away like a moment in time.