
Lina secretly leaves the base and goes in search of his mother, in the city she almost becomes a victim of mutants. To Nadia brings back the ability to understand and speak, she comes to her senses and learns to control her superpower. Nadia tries to accept herself as she was made by the virus, but she is very afraid of harming Mitya. Valera cannot accept the fact that Aizhan is an experiment.
A month ago in Moscow, there was an outbreak of an unknown disease with a 100% fatal outcome for the men, the girls turned into mysterious and bloodthirsty creatures, murders. Survivors wake up in the morning from the unexpected screams of the mutants that penetrated the base. It turns out that someone opened the door to the mutants from the inside. But who opened the door and why?
Valera's plan to break the checkpoint failed. Nick accuses Scatha of inactivity and softness and breaks off relations with him, but in fact, the reason is much deeper - the girl is in love with another member of the group and can not hide her feelings anymore. Who is in love with the impudent Nick? Who will betray friends to save himself?