When Claire's twin sister Cassie is killed in a car crash at only seventeen, she and her two best friends, Violet and Harley, are devastated.
However, they know that Cassie wouldn't want them to stop. So they formulate a plan, a way to keep Cassie alive in their hearts.
And so, the three of them set off on the trip of a lifetime, using Cassie's bucket list as a template.
Heading from Ohio to Mexico via Las Vegas, the three friends head out on a voyage of discovery, during which their friendship will be tested, their fears faced and maybe, just maybe, their grief lessened.