Because Danny is dreaming he meanders into a thought about his nightlight….
…but wait, the nightlight has another elf hiding somewhere. Where is he?
Of course, it is Norman Nightbright.
Danny asks, ‘Norman, what are you doing hiding behind the night light?’
Norman explains to Danny in his dream that the elves won an exclusive contract with the night light company to turn on the lights when it gets dark. ‘When someone buys a night light they get an elf attached. When it gets dark the elf turns on the night light. You didn’t think the lights turn on by themselves?’ Norman retorts.
‘But how come you can’t see the elf when we buy the night light?’ Danny questions.
‘That is because he is hiding,’ came Norman’s response.