A lonely beach on the southernmost coast of Brazil is the scene for two friends, on the brink of adulthood, to explore their understanding of themselves and one another. Martin has been sent by his father to retrieve what appears to be an inheritance-related document from the family of his recently deceased and estranged grandfather. Tomaz accompanies him, seemingly hoping to regain some of their former closeness. The two boys shelter themselves in a glass house, in front of a cold and stormy sea.

Isolated in an old and gloomy house, Tomaz and Martin spend their days in a tedious routine. One morning, Martin finds a young girl dead in the bathroom.