As of now, you were investigating the Ruined Pizzaplex. Child, or adult. This is after Cassie had killed the Mimic in the secret ending.

If Adult; You were a part of a team that was investigating Freddy's, and you were chosen to look around the Pizzaplex which is now in a horrible state. If Child; You were curious about the pizzaplex, and decided to enter it. It was in a horrible state of course. You entered, and walked through somehow managing your way into the Daycare.