The untamed paradise on the Atlantic island of Ons, with just a few inhabitants scattered among the greenery and cliffs, acts as a magnetic pole in the life of a group of people. Vincent and Mariña arrive to spend the summer there: he comes from an accident and its psychological consequences, so the trip is supposed to be a calming balm for their marriage. At his request, the stay is extended, and while the days become stormy, guarded secrets begin to surface, as a foreign woman appears unconscious on the seashore. An enigmatic irruption that will end up extending an unmentionable influence on their lives.