The story began on the stage of a provincial theater, where, during a children's performance, the handsome prince, approaching the crystal coffin in which his betrothed slept in eternal sleep, saw to his horror that she was dead. A murder has occurred. Yana Tsvetkova, a woman with a striking appearance and equally striking habits, once again set out to capture the criminal, who thought through the smallest details, prepared an alibi and committed the crime in full confidence that he would get away with it.