This is a story about exciting events that occurred in the life of the smallest soldier - the hero of the Great Patriotic War, six-year-old Sergei Aleshkov. He lost all his relatives and got into the army. With a six-year-old boy, they started playing the soldier game in order to preserve his childhood, and he, in order to comply with this honorary title, became a real defender of the Motherland.

After suffering a shipwreck during a meteor shower, the clumsy and comical alien Snorp finds himself in a predicament. His home planet is five light-years away from Earth, and waiting for help could take an eternity. Along with that, a greedy swindler is intent on stealing his advanced technology. Only curious boy Nikita and his family can save the stranded and help him return home.