The two children summoned the lions in a safari setting in the nursery.
The parents hear a roaring sound which makes them check on the nursery where they found Africa.
What is this!
While visiting the kids nursery, a lion jumped out of nowhere and ran towards the parents.
George and Lydia Hadley were so shook by this event that they proceeded to prevent the kids to read about Africa any longer as well as locking the door to the nursery.
Remember Lydia, they cannot be real. They are just walls.
Lydia proposes to close off the entire house for safety purposes.
They then decide to question the kids but none of them wanted to admit the truth and tried to convince them that there were never any lions in that room. Later, George finds his wallets with bitemarks in the corner of the room.