A girl who lives in a secluded house with her father and her dog finds a mysterious black cube in the woods with the ability to change the past.
Maruja lives with her husband in San Ildefonso, a working-class neighborhood of Cornellà, on the outskirts of Barcelona. She is 87 years old, she gets bored at home and often goes out in search of fresh air that makes her smile, always with her shopping cart.
