Once Upon a Time gave us reason to stand up and cheer for Snow White this week, delivering yet another fun, fascinating episode.

Next Sunday, meanwhile, the ABC hit will look to keep its momentum going by combining a promise made in the fairy tale world with a major problem in the real world. Watch the following preview to see Emma helping a young pregnant woman and to get an idea of what trouble this ladt is in.

Expect Rumplestiltskin to play a significant role on "The Price of Gold," as teased here:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.