A group of medical students dared to do what others were afraid to even think about. Who in their right mind would come up with the idea to celebrate passing a session in anatomy? This is a violation of all regulations and a sure expulsion! But they went for it. The thirst for adventure turned out to exceed all prohibitions. What is it like to spend the whole night among anatomical specimens by candlelight? What is it like to have fun and socialize among jars of formaldehyde? Seraphima could have refused to participate in this crazy idea, but, contrary to her moral principles, she agreed. She made her choice, not suspecting that by doing so she doomed the entire group of friends to death, and dancing in formaldehyde is just beginning...