TL;DR means "too long, didn't read".
Suppose someone doesn't have the time to watch all the films (including the recent Return of the Roar television movie) or can't understand the synopses everywhere online. So, write a simple, short (and yes hilarious) summary of the films (include Return of the Roar if you want to do.) Here's an example of one I came up for the first film:
"A lion father and king gets whacked by his brother; his son becomes a grub-eating hippie."