Alright, here's my summary of the first audiobook,
The Big Adventure1. The big adventure:Song: The Lone Dinosaur
Scene Littlefoot + Grandparents: Littlefoot wants to go playing, Grandparents remind him to be at home in time and to be careful.
Littlefoot is walking to his friends, narrator claiming that Littlefoot is annoyed by the overprotectiveness of his grandparents.
Gang is playing in a pile of treestars. They wanna go on an adventure, Littlefoot knows a possible way to the Mysterious Beyond (on the other side of the big, gravelly mountain)
Objections but they decide to go.
They spot a "tiny, green stick that crawls across the ground"
It turns out it is a caterpillar by the name "Harry", grumpy and afraid of Ducky's big feet and Spike's tummy. Leaves.
Gang starts their actual adventure, Littlefoot being in the lead and not certain about the veracity of his statement (knowing a way out of the Valley).
The Gang climbs the mountain. Intermediate destination is a "bubbling spring".
Arriving there, Ducky wants to bath whereas everybody else is exhausted, taking a break.
Ducky has fun playing with bubbles --> lack of understanding from the Gang (Cera in particular).
Spike is asleep.
Ducky gets locked in a bubble, screaming for help which is not noticed at first.
Cluelessness at first, Littlefoot suggests that Petrie should pop the bubble since they can't reach it from the land.
Petrie rises into the air and pops the bubble successfully --> Ducky is very thankful.
Gang relieved, Petrie pops all the other bubbles in the meantime so they wouldn't lock his friend again. Gang tell him that they are getting up anyway so he returns to them.
Gang continues their climb, ranting about their parents' objections. In the course of the conversation, Ducky states that, if she had been already grown-up, she would have freed herself on her own.
Littlefoot tells them that after the next bend there would be "dangerous ravines" --> Petrie is afraid and Ducky asks if they would encounter any bubbles on their way.
Cera balances on a precipise. Gangs utters warnings but Cera doesn't listen --> looses her footing clinging to the edge.
Littlefoot, under help of Ducky, rescues Cera. Cera admits her fault, being under fire from Petrie and Ducky.
Littlefoot is proud of the fact that he and his friends managed some small adventures without any help from the grown-ups.
Gang passes the ravines, now passing the Thundering Waterfalls. Littlefoot's aim is the big, flattened rock on its top --> considered the highest place of the world --> they hope that there would be a path leading into the Mysterious Beyond.
Being on the top, they crawl to the edge and admire the sight. Unfortunately, it is getting dark already so they have to go back home.
Sharptooth growling in the distance
Gang thinks Littlefoot's tummy is the cause.
Littlefoot objects. They soon realise it had to be a Sharptooth. The Gang is scared and they are trying to find an escape path prior to being spotted by the raptor.
Littlefoot states that he had convinced them of following him so he would get them out as well. Spots a possible hideout, a small crevice.
Cera wants to fight the raptor but the others assure her that she can't beat a fully-grown Sharptooth.
The Gang run to the crevice and try to squeeze through which isn't a problem for Ducky at all.
They spot a path and run for it.
The Great Valley gets closer and closer but Ducky is exhausted.
They arrive at the tall trees plopping to the ground under one of the trees.
Spike falls asleep immediately.
The Gang talk about their adventure. Cera claims that she wasn't afraid and Littlefoot mentions that they wouldn't have fit through the crevice if they had been grown up and they finally admit that their folks are right in the point that the Mysterious Beyond is still too dangerous for them.
Eventually they wake up Spike (almost impossible) and head to their nests.
Narrator doing the epilogue.
Alright! What do you think? Should I post the other five audiobooks first or should I do a proper translation of this one first?
EDIT: Fixed the little mistake

Thanks for letting me know, jansenov.