Actors Ginnifer Goodwin And Josh Dallas, Right, From The TV series 'Once Upon A Time.'
Actors Ginnifer Goodwin and Josh Dallas (R) from the TV series "Once Upon A Time&" arrive at the 15th Annual Costume Designers Guild Awards in Beverly Hills February 19, 2013. Reuters

"Once Upon A Time" Season 4 premieres Sept. 28 on ABC. This week's new episode, titled "A Tale Of Two Sisters," marks the beginning of the chilling "Frozen" arc in OUAT. Fans are wondering whether Queen Elsa would be a villain like Peter Pan. Emma Swan and the Evil Queen have some issues to resolve, as well. Here are some of the questions raised by Oncers in online forum sites.

'Once Upon A Time' Season 4 Premiere Questions, Speculations, Spoilers

Spoiler alert: Some Once Upon A Time Season 3 and minor OUAT 4 spoilers are included in this article. Here are some of the questions that would be answered in the new season of OUAT.

1. Is Queen Elsa a victim or a villain in the premiere of Once Upon A Time Season 4? Many "Frozen" fans would not like to see Georgina Haig's Queen Elsa become a Storybrooke villain. The showrunners have earlier said they are not changing the character stories of Elsa and Anna; still, many viewers are worried because the way Queen Elsa arrived in Storybrooke has a certain dark side to it.

2. Who will fight the evil Queen Regina (Lana Parrilla)? "Lost" alum Elizabeth Mitchell is joining the cast of OUAT in a mysterious role. Some fans are expecting Elizabeth's character to be the "other evil queen" in Once Upon A Time Season 4, Episode 1.n

3. Will Robin Hood (Sean Maguire) break up with Regina? His wife Marian (Christie Laing) is alive in Once Upon A Time Season 4, Episode 1. She is, albeit in the past. Now that Emma Swan (Jennifer Morrison) has brought Marian back through time travel, what will happen to Robin Hood's relationship with Regina?

4. How long could Rumplestiltskin (Robert Carlyle) lie to Belle (Emilie de Ravin)? Rumple's villainous nature is not likely to change. Not in Once Upon A Time Season 4, not ever. Naturally, fans are expecting his big lie to Belle to get unraveled soon enough.

5. Will Snow White (Ginnifer Goodwin) and Prince Charming (Josh Dallas) just settle in the background of big Once Upon A Time Season 4 stories? Unless the "Frozen" arc is directly connected to the Charmings, it seems to many fans that Mary Margaret/Snow and David/Charming are not going to have a big story this season. Then again, they have to take care of their newborn, Prince Neal.

On Twitter, #OnceIsFrozen is among the hashtags that fans would be using in recapping or reviewing Once Upon A Time Season 4, Episode 1.

Once Upon A Time Season 4, Episode 1 airs Sept. 28 on ABC.