Ark: Survival Evolved takes place on an artificial island floating in space called and ark. These Arks host various different lifeforms with the most prominent ones being dinosaurs
from different periods of the world. These creature can take the shape of the largest brontosaurus to the smallest meganeura. They live with more modern creatures like bears, sheep, and horses.
You as the player charcter wake up on a beach with a device implanted in your arm. Your are then left on your own to learn to survive in this world and all the creatures that inhabit it
while also building up an army of tamed animals to help you survive against this cruel world. Eventually you will venture into the multiple caves of the world and retrieve artifacts that will allow you to fight
the arks supreme lifeforms. After defeating these three lifeforms you then gain access to the final cave and to be able to fight the Overseer. After the defeat of the Overseer you are transported to an alien ship
where you find out they controlled everything, they are the ones who put all these animals in this place and the reason you are there as well. After proceeding to the end of the ship you then begin a process
known as ascension, instead of trying to describe it to you I will instead put a video below.
As you saw there are multiple other Arks, these consist of the other DLC maps in the game that have their own environments, creature, and bosses.
There is another story that you can discover while exploring the Arks through notes left by people that were there before you, telling the story of multiple tribes and their
discovery of all the secrets of these Arks.
I personally love the story of this game and could honestly talk about it for a long time with other people who either don't know about it or do know.