Where do you see yourself in five years?

Dannie Kohan lives her life by the numbers.

She is nothing like her lifelong best friend—the wild, whimsical, believes-in-fate Bella. Her meticulous planning seems to have paid off after she nails the most important job interview of her career and accepts her boyfriend’s marriage proposal in one fell swoop, falling asleep completely content.

But when she awakens, she’s suddenly in a different apartment, with a different ring on her finger, and beside a very different man. Dannie spends one hour exactly five years in the future before she wakes again in her own home on the brink of midnight—but it is one hour she cannot shake.