Mia Graydon's life looks picket-fence perfect; she has the house, her loving husband, and dreams of starting a family. But she has other dreams too—unexplained, recurring ones starring the same man. Still, she doesn’t think much of it, until a relocation to small-town Pennsylvania brings her face to face with the stranger she has been dreaming about for years. And this man harbors a jaw-dropping secret of his own—he's been dreaming of her too. Determined to understand, Mia and this not-so-stranger search for answers. But when diving into their pasts begins to unravel her life in the present, Mia emerges with a single question—what if?