When Lucita, a 17 years old sudden is found murdered in the chapel of her elite school, Superintendent Román Soto is called to investigate what is apparently a robbery of valuable gold and silver artefacts by a thief that got away empty handed. The school and Soto´s superior are happy with the explanation but he is not, so he decides to investigate further against the wishes of his Director. Who as already warned him not to upset the nuns or any important people that have their daughters at that school? Helped by his good friend and collaborator Dr. Brito and spurred on by further deaths, Román Soto forges ahead and crosses swords with the formidable Mother Superior. This also upsets a few members of a seemingly untouchable class, who have pressing problems of their own and will not help to find a murderer in their midst. The strong and colourful characters and Superintendent Soto’s relentless pursuit, continues the battle to the very end.