I know I know you guys don't know what happened last chapter but if you do good.
The thing with the 5 kids Mike was at the part and so was his to sisters Bailey and Macy. Macy and Bailey where friends with the 5 kids who got murdered that day while Mike and his friend where visiting foxy there favorite animatronic (no the bite did not happen yet) and that thing that happened it caused Mike to not remember anything from that day