It's a fantasy role-playing game.

DM: You are Caleb Widogast, a human wizard . You are the member of the famous group of adventurers. Previously, Caduceus, you, Jamedi, and Nott ran towards the stairs to the outside. Beau and Jester waited by the well for Fjord.
DM: It gets you to the last bit of air as it's about to hit the surface. At the end of this combat round, basically after Fjord, the chamber that Beau is in is now full. The water has filled the entirety of the temple.
Player: So all the way to the tippy-top?
DM: Yes.
Player: Oh, balls. I'll use bonus action and movement to go as high as I can. Do I reach the trap door?
DM: You do reach the door.
Player: I will pull out the wire from my spell components and try to jimmy to lock. Oh god, I don't know what to do! I'm underwater, yeah? So I still have action, so I'm going to try to open the lock.
DM: Okay. Make a lock picking attempt.
