Last summer, Mackenzie and Landon were the perfect couple. And then he dumped her and broke her heart. Fast-forward a year, Landon takes a nasty fall and suddenly he's stuck in the past, literally. His most recent memory is of last summer, when they were together, so now he's calling Mack pet names and hanging all over her. The plan is simple: keep Landon at arm's length, manipulate him so he's the one falling in love and then, BAM, dump him in the most epic revenge plot in the history of Everdom. There's only one teensy problem: Mack can't fall for Landon a second time.