Fallout 5 setting: The game focuses on the protagonist, The Last Astronaut, which was an astronaut that got stuck in cryo sleep when it was sent to Mars as part of a scientific expedition, for some reason the Last Astronaut can be a military man or a scientist woman and those two are married and are travelling with their grandfathers, once the Last Astronaut wakes up it finds out that his/her spouse is dead and the grandfathers are missing.
After following some clues (a map marker) they find out a terminal that shows footage of their grandfather being kidnapped by some sentient machines that also killed his/her spouse and so it starts the quest to stop the dead spouse's evil grandfather (remember for some reason the grandfathers of both the man and woman astronaut were in the ship) from leading an army of sentient machines, called the Bethards, to conquer the galaxy.
During pursuit of the spouse's evil grandfather, the Last Astronaut learns of a far greater threat in the form of the BGS. The spouse's evil grandfather has been mentally enslaved by the BGS Lord Hodd Toward, and sent into the devastated USA wasteland to initiate the purge of all sentient life in the galaxy.
Not forgetting that the Last Astronaut can build settlement space stations from broken coffee cups and lamplights and have have any alien companion fall in love with him/her and have sex. Also has an exciting crafting system where you can turn everything into chips and then use a replicator to make whatever you need, and the cherry on the top is the awesome weapons that can have super immersive names containing random words that can reach 25 in a row in just one weapon name! Also the awesome and revolutionary dialogue system with just 2 choices, the radiant quest system that will keep you entertained doing the same thing over and over for hundreds of hours, the amazing Space Power Armors and now with space Mechs and Super Space Mutants! Also fully spoken dialogue and innovative fully spoken terminal and notes/books/diaries entries, because who even know how to read anymore?
If you think this is not enough then buy the season pass and enjoy 5 future DLCs tha twe will inflate the price to justify you buying the season pass. Remember kids, Fallout 5 is made by Bethesda, and we say it is the best game ever... best game ever.... best game ever.... best game ever...