Trying to escape ugly accusations and bitter memories, Erin Wentworth flees to a desolate Colorado cabin in 1875 to begin a new life and await the birth of her baby. When Quinn Yarborough, a bounty hunter hired by her in-laws, arrives at her door, an uncomfortable domestic entanglement ensues. Tentative yet tender intimacy grows between them as the struggle to survive and the imminent birth of the baby add unexpected depth to their relationship; soon Quinn decides not to fulfill his agreement to retrieve the baby. After weathering an unforeseen tragedy, Erin and Quinn choose to marry in the hope of preserving their fledgling family. Their fragile peace is further threatened when Erin's in-laws come to Colorado, intending to claim their grandson.