What if your lover left you for, well, nothing? Literally nothing. Particle physicist Alice Coombs and her colleagues are on the cusp of an extraordinary discovery. They have created a void, a hole in the universe, a true nothingness that they have named "Lack." Philip Engstrand, a professor who studies other professors, has made a breakthrough of his own - he now understands how deeply he loves Alice.

Lack, though, is no ordinary black hole: It swallows certain things - a pomegranate, argyle socks, mirrored sunglasses - but displays no appetite for a bow tie, an ice ax, or scrambled duck eggs. This is a void that displays the outlines of a personality: a nothingness that, as Philip comes to realize, utterly obsesses his beloved. Alice, it becomes apparent, has fallen out of love with Philip and in love with Lack.