During the summer before senior year of high school, best friends Kathryn Blair and Alex Dawson plan to go up the Dawson's lake house in California! When Alex's family can't stay with them after a tragic accident, they are forced to have someone watch them all summer. The last thing these girls want is a babysitter! But after a very fortunate mix-up, guess who shows up? The Dawson's uptight neighbors? Nope. ONE DIRECTION! After thinking their summer of fun was ruined, the boys show up just in time! They plan on boating, water skiing, tubing, s'mores, and all kinds of things! But Alex's parents would never be okay with 5 teenage boys "supervising" the girls, so how long will they be able to hide One Direction at the Lake House?