Six best friends. One epic adventure. Sophia, Brooke, Alyssa, Chase, Derek, and Eli have just graduated college. Before going off to graduate school and becoming busy with their future careers, they make a plan to travel to as many cities in the world as possible--in one summer. The six friends plan for a summer of adventure, but life takes an unexpected turn when Brooke falls ill due to a hereditary disease. But Brooke tells her friends to go on without her, saying it was one of her wishes in life to travel the world. So Sophia, Alyssa, Derek, Chase, and Eli make it their goal to make Brooke's wish come true. They travel around the world, against clocks that are ticking away at Brooke's life as doctors scramble for a cure. Because if Brooke couldn't make her wish come true, her friends would.