It's Eva Thorne's 200th birthday. But it's not a celebration, more like a funeral. Eva lives in a world where the Cure for aging and illness has been discovered and administered to every person on Earth, only there's one big hitch. It turns out that very few people can handle immortality, so they have to take a test on their two hundredth birthday. If they pass, then they get to live forever. But if they fail, they must be euthanized. Eva's not an optimist. In fact, she's pretty sure that she's going to fail. Who wants to live forever if you have to do it alone?