Den' rozhdeniya Alisy) is a 2009[1] Russian traditionally animated children's science fiction film, directed by Sergey Seryogin and produced by Master-film studio.

Using a time-travelling device, Alisa and an alien scientist, Rrrr, who greatly resembles a cat, travel to the planet's past, to the day the plague began.

[5] Natalya Guseva, who played Alisa in the 1985 live-action TV series Guest from the Future, has a minor role as the spaceship captain.

It was praised as a faithful adaptation and for following the traditions of The Mystery of the Third Planet, as Alisa's Birthday characters' design was largely based on that film.

Mir Fantastiki called the film a nostalgic reprise of Soviet science fiction that tries to catch up to modern children.