After a day's flying, the falcons arrive in a large city. They make their nest on a ledge in a multi-storey building, and the male sets off to hunt for prey. Everything in the city mimics what he is used to in the country, but is subtly different: thus high-rise buildings appear to him as cliffs and canyons, and children in a playground are like brightly coloured animals. The falcon must constantly use his wild instincts to cope with new situations. There are many dangers to face. Can the birds adapt and survive?