Ruth, a 30-year-old woman who has been estranged from her family for some time, returns home when her mother dies under strange circumstances. There, she is reunited with her father, Martín, who since retiring seems to have become a grumpy, aggressive man obsessed with a sinister conspiracy theory. The relationship between the two of them is so tense, and his behavior so erratic, that Ruth begins to suspect Martín might be responsible for her mother's death. Is it possible she's sharing a roof with a murderer?

Hugo has lost the love of his life and he intends to get her back by learning to play the piano for a year. Nerea, his neighbor, will be the one to help him achieve it by giving piano lessons.

After breaking up with Norberto who ran away to Iceland, Bruno wants to find him. Arnau, a local tour guide in Reykjavik, will enroll in his search. Their trip will become a grieving process until they reach the remote island of Grimsey.