I tore up everything I ever wrote. I have periodic purges to this day, but this is the plot of a story I worked out aged about 8 or 9 which I worked into a script for a TV series.
Two kids who incidentally own their own state-of-the-art spaceship enter an intergalactic competition.
They have to visit as many different planets as they can and capture a new species from each. Preferably some kind of dangerous animal.
The spaceship was full of holding pens for this purpose.
The object of the competition was to collect as many different animals as possible, and the team with the most would win (obviously).
In think I'd created three episodes before something else came up.