Professor Vladimir Ipatyevich Persikov, an outstanding and eccentric zoologist, accidentally discovers a surprising phenomenon: exposure to light from the red part of the spectrum stimulates embryos. Organisms irradiated at the moment of development by Persikov’s beam (for example, embryos in fish eggs) begin to grow much faster and reach larger sizes than the “originals.” In addition, they are more aggressive and have an incredible ability to multiply rapidly.
At just that time, a chicken plague swept across the country, and one collective farm led by a man named Rokk decides to use Persikov’s discovery to restore the chicken population. By order from above, Rokk takes Persikov’s irradiation chambers away, which were used for the professor’s experiments—after that, further events develop in completely unpredictable ways.