This takes place in an alleyway, where Night often goes to feed them, but it makes him vulnerable to outsiders.

The little spirits are ones that hide in the shadows and are shy creatures. Dream probably doesn't know his little secret.
(Note: inspired off of Totoro and Spirited away. Those Creatures)

In the drawing, you see the shadow of Dust, who I imagine is one of those shady guys... Yeah Night gonna get kidnapped.