Once Upon a Time focuses on two very different men on next Sunday's "Tallahassee."

One is a mystery, and the other is... really, really tall.

Yes, Jorge Garcia guest stars on the upcoming installment as a well-known giant at the top of a famous beanstalk. Look for Emma to try and swipe a compass from his domain, while the ABC smash takes a look back at this ex-bounter hunter's past.

Watch the official promo now and then read our review of "The Doctor."

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