Lucia is 14, but looks younger. She's thin and has the body of a child. Her parents are divorced; she and her brother live with their mother. Their father Alberto, a chiropractor, only sees his kids occasionally. He rents a cabin at the hot springs. The holiday is going to be short and it looks as if it's about to rain. Their hearts sink on arrival. It's forbidden to use the pools because of an electric storm. Alberto tries to keep them amused and make good of their disastrous family break, but the harder he tries the worse it gets.