Soviet Scientist Petrovich pioneers the way to the Sun, but his spacecraft is never heard from again. Later, Andrew's laboratory investigates means of protection from deadly radiation. Andrew repeats Petrovich's journey, and offers his life to rescue an orbiting science laboratory, which holds the solution to the problem.
Egorov, a young hunter, dreams of catching a tiger. Traveling through the remote corners of the Soviet Union, Egorov comprehends the difficult profession of a trapper.
The history of the Soviet space program and the flight of the world's first manned spacecraft "Vostok" piloted by Yuri Gagarin.
