It's still early in "Once Upon A Time" season 5, but a battle between good and evil is already unraveling. The Snow Queen has become more powerful and is building an ice army, all because she wants to get what she wants. And now, Elsa, Anna and Emma are trying to find a way to defeat the Snow Queen, but it looks like they won't be able to do it alone.

The sneak peek for season 4 episode 5 titled "Breaking Glass" has been released. In the video, the Snow Queen captures Elsa while she is trying to help Anna. Also, Emma tries to talk to Regina into helping her defeat the Snow Queen, but Regina still hates Emma and says, "You ruined my life." But later, Regina is seen throwing a fire ball into one of the Evil Queen's ice soldiers.

What stands out the most is the Snow Queen talking to the Magic Mirror and saying, "Soon, I will have what I want."

What exactly does she want? When Elsa is captured, Elsa asks what she is going to do, and the Snow Queen says, "I'm building a snowman." Certainly, making a snowman isn't the ultimate thing on the Snow Queen's agenda.

Meanwhile, Spoiler TV has released the official synopsis for "Breaking Glass." It reads:

Regina reluctantly teams up with Emma to search for the Snow Queen after Sidney, who is once again Regina's prisoner in the mirror, discovers her whereabouts and agrees to lead her to the location. With Belle babysitting baby Neal, a nervous Mary Margaret and David prepare for their first date night away from their child and find themselves on a mission to track down Will Scarlet, who has escaped from the town jail, and Elsa sees Anna in the Storybrooke woods. Meanwhile, back in the past, young Emma finds herself a kindred spirit when she befriends a girl who, like her, is a runaway orphan."

Don't miss "Once Upon A Time" this Sunday at 8 p.m. on ABC.