Juan flees Madrid and an incestuous relationship with his sister, Ana, working at a mine on the Andalucian coast. When his friendship with Rosario, a local shop girl, becomes romance, Ana shows up wanting to rekindle their affair. He resists at first, but she stays, asserting that Juan is the only man she can ever love. Juan distances himself from Rosario. The mine has problems: high cancer rates in the area caused by poorly stored radioactive waste. A foreign safety engineer, Petersen, tries to...