|Belka, the amazing flying dog, is unexpectedly hurtled into the streets of Moscow when the rocket she is in as part of her circus routine malfunctions. She crash lands at the feet of streetwise Strelka and her irredeemable rat friend Lyonya. The new trio is soon chased by a terrifying Bulldog and his ingratiating offsider, Pug. After a narrow escape they are then pursued by a mysterious black car before being finally captured. Belka, Strelka and Lyonya awake to find themselves part of the Russian space program. A program that will see them as the first canine cosmonauts to be launched into space, thats if Bulldog and Pug dont beat them to it.