On an early autumn morning in 1903, a guillotine was installed in the square near St. John's Cathedral. The beautiful marquise-poisoner Margarita Valtrois ascended the platform... After the execution of the marquise, her daughters were sent to an orphanage, where their paths diverged for a long time. Marie was taken in by the childless family of the Grand Duke's sister, and she bathed in love and luxury. Margot went through all the circles of hell: she lived with a dissolute priest, then went to hard labor for a murder she did not commit, and was sentenced to death. She was saved by Madame Circe, the owner of the boarding house for girls. But she taught her pupils not good manners at all, but the art of theft and fraud. Margo turned out to be her most talented student. And soon she had a partner, Marie... The sisters were reunited, and soon a chain of daring robberies swept across the world. Police Commissioner Felix Dejien vowed to catch the elusive criminals at all costs. One day he came face to face with Margot, but she managed to escape right under the nose of the detective. After this meeting, they both lost peace...