Katherine Gilliam hates reading. Her only concern is passing chemistry, finding a way to survive the last few months of high school before graduation. Life has always seemed dull and meaningless to her. Having a teen mom and an entirely absent father makes things more complicated. But then Kat meets Roland, the guy who works at the bookstore. He offers to help her with chemistry, in exchange for her reading his book recommendations. Her ex-best friend, Michael Pastore, makes a reappearance in her life, and Kat is left wondering how much weirder things could get. That's when her father decides to become part of her life once more. With so many unexpected changes happening all around her, Kat questions how fast it takes for life to change completely.

Before Dylan met Leanna, there was another girl. Another story. Seventeen-year-old Dylan Gardiner never expected his life to go so bad so fast. One chance meeting on a Thursday night was all it took for his entire world to change. When Dylan finds a young woman on the side of a lonely highway, he can't help but pull over to help her, not knowing she's the one person that will change his life for the worse. Nearly a year later, he meets someone he can imagine an actual future with. Someone who has no idea who he truly is. But, sometimes, there is no happy ending.

On everyone's eighteenth birthday, they wake up to a tattoo of what the first words their soulmate says to them will be. Leanna wakes up on her eighteenth birthday, only to find the words 'unfortunately, I have to kill you' tattooed on her ankle. After inexplicable events happen, Leanna is left with her soulmate. Except there is one major problem, he may or may not be a killer.