'Once Upon A Time' Season 5 Episode 3 Live Stream Online: When, Where To Watch 'Siege Perilous' [VIDEO]

Tonight is an all-new episode of "Once Upon a Time" on ABC and since it was revealed in last weeks episode "The Price" that Emma (Jennifer Morrison) wants Excalibur, we're dying to know what the new Dark One's plan is.

Based on a sneak peek clip we learn Emma is desperate to get her hands on Excalibur, but she soon learns from Rumpelstiltskin (Robert Carlyle) that the only way to get the weapon is to have a hero pull the magical sword from the stone. Luckily the new Dark One knows exactly who that hero is. Another clip shows Regina (Lana Parrilla) and Zelena (Rebecca Mader) having a sisterly heart-to-heart chat about her escape to Oz. Furthermore, Emma shows up on Hooks (Colin O'Donoghue) ship to convince him to have lunch and chat like old times, but we think the dark one has ulterior motives. Check out the clip below.

The synopsis for "Siege Perilous" reads: "In Camelot, the heroes feverishly work to free Merlin. Determined to help Emma, David embarks on a quest to retrieve a magical relic that Regina could use to communicate with the imprisoned sorcerer, but, when David leaves, Arthur insists on joining him because the dangers ahead are greater than he can imagine. Meanwhile, Mary Margaret discovers the fate of her old friend Lancelot. Back in Storybrooke, Arthur seeks David's help to catch a thief who threatens the safety of the citizens of Camelot. Across town, Emma reaches out to a conflicted Hook as she sets about her plan to draw Excalibur from the stone."

Sinqua Walls guest stars as Lancelot, Joana Metrass as Guinevere, Liam Garrigan as King Arthur and Giacomo Baessato as Grif.

"Once Upon a Time" "Siege Perilous" will air on ABC, Oct. 11 at 8:00 p.m. EDT. ABC does offer a live stream on its website and you can catch the premiere live from the networks iOS and Android app. The episode will also be available the next day via OnDemand and Hulu or for purchase from iTunes and Amazon. If all else fails viewers can watch the new episode live here, here and here.