Honest cop Gosha is trying to help eco-activist Lena. The son of a corrupt mayor, Denis, wants to head a factory that pollutes the city.

Gosha is looking for evidence of the outflow of plant waste into the local river. Denis repairs the veterinary clinic where Lena works.

Having survived an accident, Gosha discovers his superpowers. He conducts a night raid around the city to identify violators of order.

Lena decides to help Gosha find out what is the reason for his mutation. Policeman Rykov is investigating the attack on Denis.

Rykov gives the order to shoot all the dogs in the city. Gosha's boss, Zakharych, wants to set him up with his daughter Varya.