Five night's at Freddy's : the attack of the animatronics final part

As Joe and Max ran and ran to escape Springtrap but Springtrap did not leave them.

He also ran and ran but then when they were running they saw the animatronics Freddy Fazbear, chica, foxy and Bonnie 

so they ran and ran until the animatronics disappeared ( including Springtrap) and they were waking they saw a paper and that said

William Afton is a serial killer who founded Freddy Fazbear's pizza.

The reason why he become a serial killer because of his  his son Evan Afton also known as the crying child died because he was crashed by Fredbear 

because Micheal Afton who is his older son put the crying child in his mouth so Willaim Afton got depressed then after 2 years his daughter died because circus baby

pulls her into her stomach he gets even more depressed and because his daughter and his son die his older son is the only one left he gets angry and starts to 

kill children. Okay that was depressing said Joe and Max cries because of the story but however their dad called and says i came and when they run to 

the exit they see the animatronics ( including Springtrap) and they see Goodbye animatronics and goodbye freddy fazbear's pizza and when the animatronics start chasing them but however they get out of the restaurant and they see their dad and they get inside their car and go.