Ellie Taylor and Logan Blake. Two people who couldn't have been more different, whose worlds shouldn't have collided-yet somehow, they did. When Ellie attends the first party of senior year, she encounters the mysterious and captivating Logan Blake, and her world is turned completely upside down. What begins as an unexpected friendship unfolds into something far more complicated as Ellie and Logan navigate the chaos of senior year-friendships, love, parties, and one fight that changes everything. Fast forward several years: they haven't spoken a word to each other. But when Ellie moves into a new apartment complex in another city, she discovers that the man living next door is none other than her old frenemy, Logan Blake. Now, old friends-turned-enemies are neighbors, sharing walls, hearing every little sound, and finding themselves closer than ever; able to communicate through the thin barrier that separates them.