We are in the year 2020. But not our 2020. In this alternative reality, the world has been plunged into darkness for 12 years. After the Great Blackout, all electricity disappeared, maybe forever. It is a period of great upheaval in Galicia, gripped by fear, darkness and fanaticism. But somewhere along the Via da Prata, en route to Santiago, things are about to change. Mariña, a special girl, is plunged into an unexpected adventure in the search for the light! Join us on this incredible voyage.