Scientist Kornelia investigates her sister's mysterious death, delving into her family's involvement in Poland's secret nuclear program in 1978 while a man claims he was falsely accused of the murder in 2010.

The action of the series takes place on two time levels: in 1978 and 2010. It is based on the development of its own nuclear program by Poland at the height of the prosperity in Gierek. Kornelia Titko is a brave scientist endowed with an extraordinary memory. Her parents died prematurely and her older sister died in a car accident. The protagonist's mother, Teresa Titko, was an outstanding nuclear physicist; in the Gierek nuclear program, she played the role of the right hand of its creator, general-professor Grzegorz Giedrowicz. Years later, a mysterious man appears in Cornelia's life, claiming that he was once accused of murdering her sister. The heroine begins a private investigation.—G