At the moment Dan's life ends, the Rider's begins. Unwillingly tied to Dan, who seems to be shuffling through life, the Rider finds himself moving backwards in time, each day revealing more of the series of events that led to Dan's suicide. As the Rider struggles to figure out what he's meant to do, he revels in the life Dan ignores. Beyond the simple pleasures of a hot shower and the sun on his face, the Rider also notices the people around Dan: his little sister, always disappointed by her big brother's rejection, and his overwhelmed mom, who can never rely on Dan for help. Most of all, the Rider notices Cat with her purple hair, artistic talent, and misfit beauty. But Cat doesn't want anything to do with Dan, paying attention instead to popular football player Finn. As the days move in reverse and Halloween looms, Cat becomes the center of the Rider's world -- until the Rider finds out the shocking reason why Cat is so angry with Dan. Can the Rider make things right before it's too late?