When his mother dies, Fran is taken to an orphanage. He soon runs away to Galicia, the land where his parents were born. While taking a coastal walk, he is trapped by the tide, and is unable to get back home.
A couple retreat to an Atlantic island to rebuild their relationship, strained by changes through the years. In this strange landscape a lighthouse seems to exert power, and a strange woman appears on the beach after almost drowning.
Ever since her mum died when she was fifteen, Maria has taken care of her father and her siblings. Responsible and in control, she's always been a rock for the family and feels proud of her efforts. That's why her father's sudden love for his nurse and the announcement of their marriage brings Maria's world crashing down around her. At the age of 35 and unable to find a steady partner, she'll have to take the plunge and dare to change her own fate.
