HBO has finally released the first full and official trailer of "Game of Thrones" Season 7. Everyone was surprised on Wednesday when the full trailer finally revealed the events that are expected to happen on its summer episodes. The season 7 is set to be the penultimate season of the series and it promises war on all fronts. Basically, the end is coming soon.

The 90-second trailer reveals returning casts

In the official trailer of "Game of Thrones" season 7, it previews the first live-action footage of the fantasy series after eleven months of waiting.

The trailer features Cersei who tells her brother Jaime that the enemies will surround them on all sides. Further, there has been a short glimpse of Daenerys's army who will have to fight with the Lannister soldiers.

Finally, the official trailer also lays out the characters who will be returning this season. Queen Daenerys will declare that she was born in order for her to rule the seven kingdoms. On the other hand, Ser Davos has also been featured while saying that it will no longer matter whose skeleton will sit on the Iron Throne if none of them will fight the Night King and his army of the dead.

Further, the trailer also reveals the return of Banished Melisandre. Meanwhile, Missandei and Grey Worm will become as intimate as before.

Cersei, on the other hand, will plot her own war strategy despite an incredible new map room set of Red Keep.

New season will debut on July 16

"Game of Thrones" season 7 is definitely close to its airing. The trailer already has given the short glimpse of what lies ahead with this popular fantasy series. Apparently, several theories are spreading online which entail lots of chaos and wars among the characters.

Further, season 7 is somewhat a huge preparation for a big battle to come. The official trailer has made fans feel both gloomy and doomy as it highlighted the climax of the seven-episode season. Some characters will make surprising returns after they banished from the previous seasons.

As the trailer closes to the end, a threatening declaration has been heard.

It says, "The great war is here." Furthermore, despite the great chaos that is bound to happen this season, on a brighter side, Arya will make it in the North and she will be able to reunite with her siblings.

Apparently, the trailer imparts a little lesson to its viewers. No matter how dark things will get and no matter how things shake out, it seems that some characters will still end up well this season.