Katarina lost everything: her own body and long-awaited freedom. The girl was locked in a trap of the subconscious, from which it is impossible to escape. Faced with the dark part of her personality, Katarina realizes that the current owner of her body is capable of destroying this world. She must warn all mankind: the medicine that promised to give people immortality is fraught with mortal danger. However, she has a few hours left, after which Katarina's identity will be destroyed.