Ginnifer Goodwin and Josh Dallas Ginnifer Goodwin and Josh Dallas

Once Upon a Time there was a beautiful princess, the fairest in all the land, who was banished from her kingdom by the Evil Queen until a charming prince came to her rescue.

This Sunday's episode of Once will offer a glimpse into Snow White (Ginnifer Goodwin) and Prince Charming's (Josh Dallas) first meeting, though ABC's take is different from what we know of the fairy tales. In the original Snow White, the Evil Queen attempts to kill porcelain-skinned princess several times, eventually giving her a poisoned apple that puts Snow White into a deep, almost death-like sleep. Prince Charming comes to her rescue, waking her with a sweet kiss, and they live happily ever after.

In the world of Once, however, Snow and Charming's first meeting is a tumultuous one. "The inception of their story is based more on animosity, manipulation and selfishness," Goodwin says. "They have a very far way to go from their moment of meeting to falling in love."

ABC's Once Upon a Time turns fairy tales into reality

"There's definitely this huge attraction when they first meet under very interesting and fun circumstances," adds Dallas, who hints that his Storybrooke character, the John Doe in a coma, may be involved with someone else. "Who he's entangled with, it may or may not be a true thing. It could be false memories," he says.

Because the residents of Storybrooke are stricken with amnesia, Goodwin says, "There's no way for their relationship to be what it is in fairy tale land when he wakes up. This amnesia and these implanted memories are certainly going to provide many obstacles."

Who or what may be standing in their way in the real world? That will be answered in Sunday's episode of Once at 8/7c on ABC. Until then, hit the comments with your theories.