The story begins with an ordinary family celebrating New Year at their house. Having seen an announcement on TV about the intergalactic song contest "Cosmovision", Masha immediately decides to take part in it. Her family supports her and goes with her and the aliens to the contest. There, the earthlings meet the stars of intergalactic show business: the legendary singer Diva, the hero Zed, the talented artist Fortiano and the cunning pop singer Baron-Star, who is planning something terrible against the "Cosmovision" participant Masha.
