As all his friends return for the summer from their first year away at college, Nick Monroe feels lost and alone. His father is dating a much younger woman, while his friends seem to be moving on with their lives. As he treads carefully into a relationship with his best friend, Megan, Nick, along with his other friends Kaz and Mulligan, will discover the truth about the mysterious new family that has moved in down the block-a truth that may destroy them all.