Ten years ago, it was hard to imagine that a blind person could restore vision with the help of prostheses. Our heroes did. Grigory and Antonina performed operations to insert an implant into the retina. After a long rehabilitation, they successfully use the new "bionic" vision. Antonina can even read text written in capital letters. Today, science is on the verge of another amazing technology. An implant for the visual cortex of the brain is being tested before our very eyes. So far on monkeys. Dramatic stories in the film alternate with scientific conversations about the device and the meaning of vision.
