In 1869, Gloriana Womack's family is much smaller since smallpox killed her mother and two of her siblings. She lives in a modest cottage in Duluth, Minnesota, with her father and young brother, and she has dedicated her life to holding her tiny, fractured family together—especially as her father is frequently gone on long fishing trips. Their livelihood may come from the waters of Lake Superior, but storms on the lake can be dangerous, even to those who know it well. Luke Carson has come to Duluth to help shepherd the arrival of the railroad to the city's port, and he's eager to be reunited with his brother, Scott, who recently moved there with his pregnant wife. Competition for the railroad is fierce, with the neighboring city of Superior, Wisconsin, fighting for the tracks to come through their town instead. But the real danger lies in a resident of Duluth who is determined to have his revenge upon Luke. When tragedy brings Gloriana and Luke together, they help each other through their grief and soon find their lives inextricably linked. If they survive the trials ahead, could it be possible they've been destined for each other all along?

In 1871, Kirstin Hallberg arrives in Duluth, Minnesota, to find the city council intent on building a canal and ensuring the city's rise to greatness. She's come to care for her elderly grandmother Lena Segerson only to discover Lena very full of life and full of secrets. For when Kirstin opens their front door one day, she finds the brother she long thought dead on the other side. Domar begs his sister to say nothing to their parents, viewing their grief as payment for falsely accusing him of bad behavior years prior and driving him from their Swedish village. Caught between her brother's wishes and the chance to ease her family's pain, Kirstin doesn't know which decision is right. When Domar's friend Ilian is hurt in an accident, Kirstin and her grandmother volunteer to care for him. Ilian struggles with his own bitterness toward his estranged father, heightened by his injured leg. He can now never return to logging, but the only other thing he really knows and enjoys is making Mackinaw boats—but that would force him to seek his father's help. As he recovers, a natural attraction starts between Ilian and Kirstin, but both are dealing with problems without easy answers. With no clear way forward, can love ever thrive and the past be forgiven?

Elise Wright loves her Great Lakes life onboard her father's ship, the Mary Elise. As cook, Elise can keep an eye on her father and the grief he bears, fulfilling a promise to her late mother. But in doing so, she may forfeit love and a family of her own. Trying to forget his own guilt over a wrong decision while captaining another ship, Nick Clark hires on as the Mary Elise's first mate, quickly bonding with the attractive cook over their common struggles. When a rough new sailor makes an inappropriate pass at Elise, her father believes it was a misunderstanding and offers a second chance. But other odd behavior raises Nick's suspicions. Just as clues to the sailor's unsavory past start to stack up, an even more immediate danger swells up around them. Forced to confront their greatest fears, Nick and Elise will have to rely on their faith and each other to see them through.