Set in 19th century Vienna, Ignac Semmelweis, a short-tempered but passionate doctor, delivers babies and carries out autopsies on a daily basis while looking for the cause of puerperal fever, the mysterious epidemic that decimates patients in the hospital.
Alíz and Máté get romantically involved, even though they both have families. But the outbreak of the pandemic, rewrites the rules of their newly formed relationship. They must decide: is it just a flare, or is it real love? And if it is love, do they have the right to sacrifice others happiness for theirs?