Nancy never believed in love at first sight - until Oscar. When he doesn't look twice, a stranger's ruby promises to fix that. It does. It fixes everything, in fact, except the parts of Oscar that were never supposed to change.

Now, the boy she wished for is becoming something else entirely, and everyone Nancy loves or knows is running out of time to find out how far he will go to keep her. A slow-burn descent into obsession, with a cost no one saw coming.