Newly widowed mother Abby Baker goes home to Hope Harbor to help her ailing mother and restart her life. Weighed down by grief and fear of failure, she wishes she had the strength of her grandmother, who raised a young child alone while taking on the role of lighthouse keeper after her husband drowned. What was the secret of Granny Abigail's strength?

Carson Stevens is a lighthouse enthusiast who has bought the deteriorating Hope Island lighthouse to restore it and turn it into a bed-and-breakfast. When he meets Abby, he wants the attractive granddaughter of the former keepers to be part of the restoration.

As Abby and Carson work together, they uncover clues to a family secret that threatens to change Abby's life forever. But someone is trying to sabotage their efforts at restoration.

Renovating the old lighthouse is Abby and Carson's goal, but as they grow closer, they discover that what they've really needed is a renovation of their hearts.