this will make sure you know the start of fnaf storyline creator of five nights at freddy is scott cowthon oh and if you are under 12+ you need to go because this is a horror game
1970 - FredBear's Family Diner [Generation I]
FredBear's Family Diner opens
The origins of FredBears Family Diner are unknown.
FredBear's Family Diner closes.
1987 - Freddy Fazbear's Pizzeria [Generation II]
Freddy Fazbear's Pizzeria opens
During this time, a previous guard worked then Jeremy took his place and worked. Jeremy possibly was the suspect of The Missing Children Incident, so then he had a Golden Freddy costume and lured the children and murdered them. Now remember, the animatronics can access criminal database, so they are trying to kill Jeremy to stop him from murdering the children cause they know. He possibly lured the 5 children with a Golden Freddy costume and stuffed them into the old costumes. The children's spirits haunt the old animatronics and have became angry and kill every security guard at night to stop them from killing more children.
Time later when Jeremy is on his 6th Night the Phone Guy mentions that if he got the memo and he doesn't need to do the Night Shift. But he came back to see how the animatronics would act when he stuffed them (possibly) into a costume. He notices the Golden Freddy costume he used came back to haunt him.
Then after he finishes his shift, he is moved to the day shift and is told to stay near the aniatronics. So then because he got away with being caught as the murderer and he survived his night shift, a animatronic has no choice but to bite Jeremy. After the bite he was arrested because they may know that the animatronics have criminal database, or someone mentioned it to them.
Next Fritz Smith works and tampered with the animatronic. The oder on the new animatronics proves it then he is later fired.
Freddy Fazbear's Pizzeria closes.
1990 - Freddy Fazbear's Pizza [Generation III]
He does his shift and gets fired on his 7th night for tampering with the animatronics. Oder was layed on the animatronics which proves mike tampered with them. General Unprofessionalism (screaming, stoping, accidently breaking stuff from scare, etc.) has been reported.
Freddy Fazbear's Pizza has closed and cannot be reopened.
Freddy Fazbear's Pizza opens.
The old animatronics are polished and somewhat fixed, though they still any security guard at night.
The phone guy starts his shifts then dies on his 4th night.
Not much is known about Mike, and it is unknown why he comes, possibly because he is poor.
FNaF 4
4 new animatronics are created as Bonnie, Foxy, Chica and Freddy. But something else happened. The year is 1983 and the crying child in FNaF 4 starts his fear. One of his friends is likely to have been murdered by his father, William Afton (purple man) in a animatronic suit. As said in the FNaF 3 phone calls we learn that the suits can both be worn and operate individually as an animatronic. The dead friend later came to guide them as the spirit of plush Fredbear. The crying child is traumatized and scared of Spring Bonnie and Fredbear. His older brother Michael Afton teases his younger brother and eventually leads his younger brother to die by Fredbear's jaws. He posseses Fredbear and the diner shuts down.
FNaF 2 + Sister Location
1987. The pizzeria is reopened as Freddy Fazbear's Pizza and the new toy animatronics are created. Henry (William's partner) loses his daughter when she is killed by William. Furious as he is he starts a plan to end everything and destroy all animatronics once and for all. Henry's daughter is possessing the puppet and gives life to the 4 withered animatronics from murdered children William loses his daughter Elizabeth as well when Circus Baby captures her. Elizabeth possess Baby. The funtime animatronics are specifically built to capture children and Henry knows this and regrets helping William.
Ennard tricks Michael who takes the job in Sister Location to the scooper and Ennard climbs inside so they can leave. But his skin turns purple and Ennard is forced to leave.
FNaF 1
The old animatronics are restored in the new Freddy Fazbear's Pizza in 1993 but with a much smaller budget. William attempts to dismantle the animatronics to hide his crimes but in doing so he releases the spirits of the children who chases him into the Spring Bonnie suit (that he hid in the saferoom), killing him and turning him into Springtrap. The original 5 spirits can now rest, (Bonnie, Chica, Freddy, Foxy and Fredbear/Golden Freddy).
FNaF 3
30 years later Fazbear's Fright opens and Springtrap attempts to flee. He succeeds when the building catches on fire but Springtrap is put on auction for sale.
Freddy Fazbear's Pizzeria Simulator
Henry has now managed to set up his plan to end it all and gave out a job listing that Michael takes. They buy and lure all the animatronics, including the marionette trapped in Lefty, together and burns the last of them. Baby, Ennard, Springtrap and the Marionette die together with Henry and Michael, ending everything and setting all the souls free.
This was FNaF.
There are still a lot of things I have not answered and I might be wrong so go and make your own theories. This was my interpretation of the story. Hope you enjoyed!
Thank you.
The story comes from this link The Entire Story of Five Nights at Freddy's | Five Nights At Freddy's Amino (aminoapps.com)