Ever since her journalist mother died on an assignment, Marin has played it safe, refusing to set foot outside Tennessee. Her younger sister, Sadie, has trotted the globe as a photographer, taking on all kinds of dangerous jobs. When Sadie returns looking a little worse for wear, Marin reluctantly agrees to a sisters' spa weekend on a tropical island. But her lifelong fear of travel is affirmed when Sadie misses the flight, and Marin nearly throws up on Lucas, the handsome stranger in her sister's seat. What Marin doesn't know is that Sadie never planned on coming on the trip at all. Instead she has a life-changing plan for Marin - and Lucas.