Liza Murashova, an employee of the Institute of Pharmacology, is a serious girl, the Princess Nesmeyana of her friendly team. She works a lot, and in the evenings drinks tea with her friend Lyuda, who dreams of a home, a Persian cat and her boss Pavel Anatolyevich. But suddenly the body of laboratory assistant Lenka is discovered at the institute. It was found next to the terrarium - the girl died from a snake bite. The police blame everything on negligence, but no one believes the young specialist is guilty. Rumors begin to creep around the institute, suspicious conversations are heard from corners, and strange and scary facts emerge in the biographies of employees. Despite her natural caution, Lisa begins a personal investigation. She has no idea that she is putting her life and the lives of her friends at risk. Because at the heart of this story is real passion. The passion of a snake warmed on its chest.