William Afton and Henry Emily started Fredbear's Family Diner, creating animatronics that could walk around and interact with customers.

The Crying Child, William's youngest son, was terrified of the animatronics, and his brother Michael loved to taunt him about it.

During one of the Crying Child's birthdays, Michael and his friends decided to play a prank, unknowingly leading to a tragic incident.

The prank went horribly wrong when the Crying Child's tears activated the spring locks in Fredbear's mouth, causing a fatal accident, later known as the 'Bite of '83'.

Following a disagreement with Henry, a furious William encountered Henry's daughter alone outside the diner and in a fit of rage, he met his first innocent victim.

In the same year, William Afton opened Circus Baby's Entertainment and Rental, introducing a new set of animatronics known as the Funtimes.

Elizabeth, William's daughter, was fascinated by the animatronics, particularly Circus Baby who could dispense ice cream.

Michael, under the alias Mike Schmidt, began navigating the facility, guided by Circus Baby, to avoid the deadly Funtime animatronics.

Despite warnings, Elizabeth approached Circus Baby, leading to a tragic malfunction where the animatronic's ice cream dispenser claw fatally grabbed her.

Haunted by his sister's fate, Michael continued his dangerous journey in the underground facility, seeking to put an end to his father's deadly creations.

As the truth unraveled, Michael faced his father's insanity, understanding the depth of the horrors he had unleashed.

Driven by guilt and fear, Michael vowed to stop his father, setting a course for a showdown that would send ripples through the world of Fredbear's Family Diner.