Once Upon a Time Season 2 will take this Sunday off in honor of the Oscars, but will then return in a big way on March 3.

Viewers will finally meet Snow's mother on "The Queen is Dead," as Rena Sofer guest stars in the key role of Eva and we flash back to Snow's childhood.

According to the official ABC description, the Blue Fairy offers this adorable tyke "an unconventional enchantment that could help save her dying mother." Meaning what, exactly? We'll be tuning in to find out.

Elsewhere, it looks like Mary Margaret and David have tracked down Rumplestiltskin's's dagger... but Regina won't let them walk away without a fight. Click through the teaser-filled images now:

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