Shortly before the war of 1940, somewhere in Marousi, Eleftheria, a ten-year-old girl, lives with her parents. Her younger twin siblings call her Letro and when they get mad at her, Laveran's plasmodium. She despises housekeeping and "women's" chores, while she is crazy about everything her father disapproves of: She reads books voraciously, eagerly awaits to see theater, sneaks peeks at the newspaper, and wishes to someday resemble Sophocles' Antigone.

On the upper floor of their house, Mr. Marcel, a Frenchman who permanently lives in Greece, has his nephew Benoit under his protection, who becomes an inseparable friend of the children. Their toys are few: marbles, spinning tops, jump ropes, yoyos, and a pair of roller skates. Their imagination is boundless: together they come up with a thousand and one stories that enchant even themselves. And how much more they would think of doing if the adults didn't get in their way...

Adults and children. Two worlds so distant that no matter how many years pass, their laws and language will never be the same. Each carries their own truth. That's why, after all, many things can be hidden behind a purple umbrella!