Wait for it

Marinette now being the sole protector of the miraculous after Fu died and Hawkmoth being defeated now enters her battle in Gotham. Her class trip has already gone down the drain after 1 day in Gotham, her horrible day turns a little better after a run in.

"So are you just going to stand there like a creep or help? Not stand and watch a lady in distress get attacked." She hears what she assumes is a grown man laughing, and then sees Batman drop down. But only him, 'I'm pretty sure his voice doesn't sound like that with the voice changer.' She feels the movement behind her before the Bat can say anything, a hand moving to grab her.