Její hřích: Lola Holm, a medical student, is studying for her final exams. She rejects the courtship of psychiatrist Associate Professor Linn. Bank cashier Goll lives extravagantly and his salary is not enough for his excesses. He is in need and has mental problems. He seeks medical help and accidentally meets Lola. At first, she rejects Goll's attentions, but then she can't resist him and becomes his mistress. Goll embezzles money. He is exposed and faces imprisonment. He turns to his uncle for help, but he rejects his request...