Ahh, now I see what you mean. Yeah, that’s the movement route preview, something they added relatively recently in MZ.
Well, the plugin basically does what you can see in the video. It creates a path of little dots leading to a specific destination, which helps the player orient themselves better to, for example, find an NPC, a shop, or something in particular. This plugin really shines on large maps where getting lost is relatively easy 😅
So, Keep in mind that all plugins run when the project itself is executed. Unfortunately, RPG Maker doesn’t support plugins that modify the base functionality of the program itself.
I hope that helped! If you need anything else, just let me know!