Ashley Fletcher is legally separated from her husband and on the verge of a divorce when a man she met years before comes into her tobacco shop.

Bryce Haze is a man of daydreams, and they had a growing friendship before he completely disappeared from her life. Now he is back, and in light of her pending divorce, they jump headlong into the relationship both of them once dreamed of.

They spend three completely involved days together, but when they return to reality, they discover that a fast spreading pandemic has broken out. The virus leaves its survivors with a semi-mindless lust for blood and raw meat. As Bryce struggles to keep both of them alive, he fears that Ashley may have contracted the virus, but can he keep the only promise she ever asked him to make?