The McCauleys have raised their twin sons on Shep’s Island, just off the coast of Maine. Egan wants to be a professional athlete, and Lucian wants to be a painter. Growing up in the wake of a childhood accident that marked both boys, they are inseparable until Lucian quietly begins to wonder who he might be with no mirror image walking beside him. On a trip abroad, Lucian meets Lea, who follows him home to idyllic Shep’s Island. When a shocking family secret comes to light, Lea flees back to the mainland --- not with Lucian but with his twin, Egan, whose connection with Lea is immediate and undeniable. The years will pass with Lea caught between the two brothers. Even when she decides to begin a life on Shep’s Island with one of them, fate will continue to bring these three into one another’s orbit.