Mackenzie Clark has been best friends with Nolan Walker for as long as she can remember. She’s shared everything with him, from adventures with their families and days lounging at the beach, to long talks about their friends and her journey with type 1 diabetes. The only thing she hasn’t shared is the fact that she is in love with him. Now in their senior year of high school, Mackenzie and Nolan know that in a few short months everything will change as they head off to different colleges. Determined to make the most of the time they still have left, they come up with a list of things they want to do together before graduation. But as they make their way through everything from toilet papering the school bully’s house to having a backyard camp-out like the ones they had when they were kids, Mackenzie can’t help feeling that she’s left the most important thing off the list: telling Nolan how she feels. But when confessing her love could jeopardize the incredible relationship they already have, is honesty really the best policy?