Elliot thought he had the noisiest neighbors—two girls more into each other than the world around them. But when a late-night experiment with a rubber toy takes an unexpected turn, Elliot steps in to prove a point… only to find himself at the center of a very confusing, very intimate situation. As Chloe starts to piece together the truth, the dynamic between the three shifts—and nothing on their quiet little street will ever be the same again.