Brilliant but emotionally guarded Caro Drake arrives in Oxford with the singular goal of attaining her PhD - but through a turbulent friendship with a charming young man, Caro begins to open herself up to mystery, vulnerability, and love.
When an image-conscious wild child takes a strange new drug at a party, she undergoes a shocking transformation. Desperate to reverse the effects of the drug, she is horrified to discover that she has become the key to saving the human race.