(The friends have just gotten onto the ship from the picture frame and are trying to find a way to get home by asking the captain and first mate. So far, nothing has been accomplished.)
"You're clearly not from our land, that I can confirm, and you got through to this realm with a picture frame. I'm guessing the only way to send you back through is with magic, but I don't believe in such things. Do you know some magic spell that will whoosh you back into your world?"