It's a fantasy role-playing game.

DM: You are Keyleth, a half-elf druid . You are the member of the famous group of adventurers. Previously, They stumbled upon a small hive of basilisks that surrounded an obelisk of Ioun, which gave them their first clue as to the location where this sphinx could be found. They battled the basilisks, destroyed their underground hive, or at least the exit from it, via Fireballs and Stone Walls and other such endeavors.
DM: The fire guy. He's actually on top of another larger orc, so you burst through, the fire is destroyed and you see a bunch of the stone is thrown aside, what was the campfire has now been detonated in a burst of snow and earth. You burst out. Are you catching him?
Player: Yeah. That's cool.
DM: So you burst up, the bigger orc body then rolls off onto the ground and keeps smoldering. You catch the guy who's on fire, currently holding him above you. What are you going to do?
Player: First, I want to stamp him out in the fire, in the snow, sorry. Stamp out his fire in the snow.
DM: You're clutching him. He's flailing about in your grip. Fire's out.
Player: And then I'm going to, I want to grapple onto him. I want to start dragging him over to this nearby tree.
DM: So make a grapple check, it's an athletics.
Player: Athletics?
DM: Yep.
Player: I've only got basic stats here.
DM: Roll a d20, add your strength modifier.
Player: Oh. 19. 20, 20.
DM: He rolled a one. Yep. Through the flames and the chaos, he can't even resist, and you have him in a full grapple. He's not restrained, he can still attack, but he's at disadvantage on all his attacks, but he can't move, his movement is zero and you're currently holding him in place.
Player: Okay. Can I start dragging him over so--
DM: At half-speed, yeah, you've already done 20 feet to get there, so you can move him ten feet.
Player: Okay. I'll slowly start dragging him to this tree over here. So we can tie him up.
DM: One, two. That's as far as you can drag him there.
Player: Okay.
DM: As you're pulling him back, and he's like, (struggling noises).
Player: Come on.
DM: All right, that ends your turn. Vex, you're up.
