Belka, the amazing flying dog is unexpectedly hurdled into the streets of Moscow when the rocket she is in malfunctions during one of her circus routines. Fortunately the crash leads her to meet a streetwise dog named Strelka and her irredeemable rat friend Venya. Together with other amusing friends found along the way, the three find themselves in a space program-training center where they get sent away in a rocket, leaving planet Earth...

Get ready to blast off to an out-of-this-world adventure with canine teenage astronaut, Pushok, who is determined to find his missing astronaut father. Against all odds, Pushok stows away on a US rocket ship to the moon but soon finds he is not alone, as he is reunited with his mom and encounters a macho monkey and a baby alien. Together, the furry heroes learn the true meaning of teamwork as they join the search for Pushok's dad.

When a mysterious whirlpool appears in the Atlantic Ocean, astronauts Belka and Strelka must once again act heroically and complete a mission to save the planet along with the distant home of their new alien friends.