When her beloved grandmother passes away, Mia Broadhurst returns to the snow-covered seaside village of Winsted Cape, where Grandma Ruth ran the lighthouse overlooking the golden beach. This will be Mia's first Christmas without her, and she can't bear to part with the lighthouse that has been in their family for generations. As she steps into it, childhood memories rush back to her. She can almost hear them playing tag on the steps. But her life...