Tech millionaire Miles Cookson has more money than he can ever spend, and everything he could dream of, except time. He has recently been diagnosed with a terminal illness, and there is a fifty percent chance that it can be passed on to the next generation. For Miles, this means taking a long hard look at his past. Two decades ago, a young, struggling Miles was a sperm donor. Somewhere out there, he has kids, nine of them. And they might be about to inherit both the good and the bad from him, maybe his fortune, or maybe something much worse. As Miles begins to search for the children he's never known, aspiring film documentarian Chloe Swanson embarks on a quest to find her biological father, armed with the knowledge that twenty-two years ago, her mother used a New York sperm bank to become pregnant. When Miles and Chloe eventually connect, their excitement at finding each other is overshadowed by a series of mysterious and terrifying events. One by one, Miles's other potential heirs are vanishing, every trace of them wiped, like they never existed at all. Who is the vicious killer, another heir methodically erasing rivals? Or is something even more sinister going on? It's a deadly race against time.