The protagonist of the series "Zamok na peske" is Anna Tumanova, a loving wife and expectant mother. She experiences a great tragedy: her husband dies in a terrible car accident, and she loses her unborn baby. Not only does Anna's whole life crumble overnight, but she is also pursued by a gangster - the owner of the oncoming car - who demands a huge compensation for his damaged vehicle. However, despite being devastated by grief, the widowed Anna finds the strength to resist the circumstances and decides to fight for her rights.