an escort mission is a video game reference. It’s where you have to protect an npc as they follow a predetermined route on which enemies show up to attack. The point of the mission is to get the npc to the end point. In the case of Sugar Plum this means getting her from the cell to outside the castle without her getting caught/killed. what makes her difficult is how loud she is, attracting enemies, and irregular her movements are, she’s hard to follow/keep an eye on.

OHHHH I GET IT NOW! 😀 lolol thank you for explaining!