When Maverick Hawke is nine years old, he is told that he will die before he reaches the age of twenty five. His life changes forever, finally becoming aware of the disease that he had been sheltered from his whole life. It's incurable, unstoppable, and it effects every single person born after the year 1990. With a 100% mortality rate, the world is in a desolate state. They've created a system, a way of classifying the infected. There's the Positives, the ones who have a higher chance at reaching the age of 25, they experience less symptoms, live fuller lives. Then there's the Negatives, some dying as young as 17, they live with terrible symptoms, wasting away before everyone's eyes. This itself is bad enough, but there's more. Of course there's more.
They don't know how it happens, they don't know the mechanics behind it. They just know that it's proven, and it is absolutely and utterly forbidden.
A Positive and a Negative must never fall in love because if they do, it will kill them both.