In a small coastal town of fishermen in Uruguay, the biologist Kraken works and lives in a house at the sea side with his wife Suli and their aggressive fifteen year-old daughter Alex. When Suli welcomes her former best friend Erika that comes with her husband, the surgeon Ramiro and their teenage son Alvaro to spend a couple of days with her family, Kraken learns that his wife invited Ramiro to operate Alex. Meanwhile Alex and Alvaro feel attracted by each other; however, Alvaro finds that Alex is hermaphrodite and she finds that Alvaro is gay. But the troubled and outcast Alex has the right to choose what gender she wants for her.