EMMA FINDS HERSELF SLOWLY FREEZING TO DEATH WHEN ELSA TRAPS HER INSIDE AN ICE CAVE, AND IN THE ENCHANTED FOREST OF THE PAST, ANNA TRIES TO TEACH A MEEK DAVID TO FIGHT WARLORD BO PEEP - WHO IS THREATENING TO TAKE HIS AND HIS MOTHER'S FARM AWAY IF THEY DON'T PAY HER PRICE, ON ABC'S "ONCE UPON A TIME"

"White Out" - While desperately trying to find her sister Anna, Elsa is startled by Emma and accidentally traps them both inside an ice cave, with the frozen temperature placing Emma's life in peril. Regina, depressed over her likely breakup with Robin Hood, secludes herself away from the town and Henry, which saddens her son. And with the townspeople considering Mary Margaret their leader, she faces her first leadership task in trying to re-start a generator and restore the town's electricity after Elsa freezes and damages the power lines. Meanwhile, in the Enchanted Forest of the past, Anna tries to teach a meek David to fight Bo Peep, a brutal warlord who is threatening to take his and his mother's farm away if they don't pay her price, on "Once Upon a Time," SUNDAY, OCTOBER 5 (8:00-9:00 p.m., ET) on the ABC Television Network.

"Once Upon a Time" stars Ginnifer Goodwin as Snow White/Mary Margaret, Jennifer Morrison as Emma Swan, Lana Parrilla as the Evil Queen/Regina, Josh Dallas as Prince Charming/David Nolan, Emilie de Ravin as Belle, Colin O'Donoghue as Hook, Jared S. Gilmore as Henry, Michael Socha as Will Scarlet and Robert Carlyle as Rumplestiltskin/Mr. Gold.

Guest starring are Lee Arenberg as Leroy/Grumpy, Beverley Elliott as Granny, Michael Coleman as Happy, Georgina Haig as Elsa, Elizabeth Lail as Anna, Robin Weigert as Bo Peep, Gabrielle Rose as Ruth and Sean Owen Roberts as ruffian.

"White Out" was written by Jane Espenson and directed by Ron Underwood.

"Once Upon a Time" is broadcast in 720 Progressive (720P), ABC's selected HDTV format with a 5.1 channel surround sound. This program carries a TV-PG,V parental guideline.

For more information on "Once Upon a Time," visit ABC.com/Once