When American restoration architect Eliza Winters arrives in a small Portuguese coastal village to renovate an abandoned lighthouse, she's seeking professional redemption and escape from a broken engagement. The last thing she needs is conflict with Miguel Santos, the handsome local historian who opposes her modern design approach and feels protective of his family's historical connection to the structure.
During the renovation, they discover a cache of weathered letters and diary fragments hidden within the lighthouse walls - revealing the star-crossed romance between Clara Sullivan, an Irish immigrant stranded in Portugal in 1924, and Ant nio Ferreira, the lighthouse keeper's son who dreamed of becoming a writer.
As Eliza and Miguel piece together the mysterious correspondence, uncovering why the lovers were separated and what became of them, their initial animosity transforms into mutual respect and undeniable attraction. The parallel between the contemporary and historical romances deepens when they discover Miguel's grandfather was Ant nio's younger brother, making him the keeper of a family secret that has shaped generations.
When Eliza's Boston firm pressures her to modernize the lighthouse beyond recognition for a luxury hotel conversion, she must choose between career advancement and preserving the authentic structure that houses not only Clara and Ant nio's story but also her blossoming relationship with Miguel. Meanwhile, in the historical timeline, Clara struggles with an impossible choice between pursuing her planned future in America and remaining with Ant nio in Portugal.
The narrative alternates between the present-day restoration project and the 1920s romance, with each timeline informing and echoing the other. As the renovation deadline approaches, Eliza and Miguel race to complete Clara and Ant nio's story before corporate interests erase the lighthouse's soul. The discovery of Clara's final letter reveals a heartbreaking truth that challenges Miguel's understanding of his family history and forces Eliza to confront her own fear of commitment.
Set against the rugged beauty of Portugal's Algarve coast, "Echoes Across Oceans" explores how love leaves indelible marks on both hearts and places. When the past finally speaks its complete truth, Eliza must decide whether she'll repeat Clara's choices or find the courage to change course. And Miguel must reconcile his family's carefully maintained narrative with the reality of Ant nio and Clara's sacrifice.
As the restored lighthouse finally illuminates the coastline for the first time in decades, the novel culminates in a decision point that mirrors the historical couple's fateful choice - revealing whether Eliza and Miguel will learn from the echoes of the past or be doomed to repeat them.