"Us all?" Finn echoes him, confused as he looks up at Poe. "What do you mean?"

Where's the rest of the Resistance? The only thing Finn can think is that they were attacked while he was asleep, but Poe seems just as confused as he is. Poe should know, though. Poe knows everything about the Resistance.

Finn shakes his head slowly, utterly lost. "I don't understand...you mean you don't remember either?"