"No, you can't leave. But time stops outside. Nobody will worry that you are gone. When the door reappears, you return to the point at which you came in."

He offers her a hand in a gesture that could extend to a hug, if she wants one.

"A drink it is. What would you like?"

The mixture of Korean and English is different, but it's far from being the oddest linguistic conversation Sam's ever held.