The animated short film "Buba and the Underground Gnomes" tells the story of Buba and his friends' adventures on a playground. Buba meets underground gnomes and goes on a treasure hunt with them, discovering the true beauty of the real starry sky. They return to the playground, and Buba shows the gnomes the real stars in the sky.
Sure, here are the key facts from the text:
1. Buba and his friends were playing on a playground with a hill.
2. Buba climbed the hill and rode down on it.
3. Mouse Lula also wanted to go down the hill.
4. Parrot Guga and Worm Duda followed Lula.
5. Buba and his friends saw shooting stars in the sky.
6. One of the stars flew into a yellow pipe on the slide.
7. Buba jumped into the pipe and ended up underground.
8. Buba found crystals in the underground cave.
9. Buba saw his reflection in a crystal.
10. Buba tried to scare his reflection, which made it sad.
11. Buba and his reflection imitated each other.
12. Buba heard a quiet whistle and saw underground gnomes.
13. Buba followed the gnomes onto a train.
14. Buba's train took a different path from the gnomes'.
15. Buba's train had a rough ride but eventually reached the gnomes.
16. Buba crashed into the gnomes but found a treasure in the process.
17. The gnomes rewarded Buba with a lantern, pickaxe, and more.
18. They used the gems to create a starry sky underground.
19. Buba wanted to return to his friends and show them the real sky.
20. Buba and the gnomes built a ladder to the surface.
21. Buba and the gnomes met Lula and Guga at the slide.
22. Buba introduced his new gnome friends to Lula and Guga.
23. Buba turned off the playground lights and showed them the real sky.
These facts summarize the key events and actions in the text without including opinions or subjective information.