Maksim is so busy at work, trying to do everything and not let his boss down, that he does not notice the most important things in his life. On the anniversary of meeting his beloved girl Sasha, after an accidental quarrel with an unusual taxi driver Tamara Petrovna, completely inexplicable events begin to happen to Maksim - he will have to live his life on rewind.
A teenage soldier in World War I—a simple village boy with a naive youthful dream of fame and medals—throws himself into the unknown and goes blind in the first battle, thus taking on a new job: intercepting enemy planes by listening to the air through huge metal funnels.
