"Downton Abbey" season 6 will close down the estate and all the stories it shared for good, and a new trailer well demonstrates the blues brought about by the looming culmination of the long-running BBC drama. 

"If I could stop history in its tracks, maybe I would," Hugh Bonneville's character Lord Grantham tells Jim Carter's Mr. Carson in the trailer, while looking very emotional. "But I can't, Carson, for neither you nor I can hold back time." 

In another scene, Anna (Joanne Froggatt) asks Mary (Michelle Dockery) as they reminisce, "We have had our moments, haven't we my lady?"

The latter replies, "We certainly have."

"Downton Abbey" season 6 is shaping up to be a tear-jerker. With the shooting already wrapped up, the cast and crew have already said their goodbyes and they themselves find it a little too difficult moving on. 

The new season is set in 1925, specifically six months after the events in the season 5 finale. It will still be chock-full of drama and tension. It will not end without keeping fans up to speed on where their favorite characters are headed and the endeavors they will go on to pursue. 

"We wanted to close the doors of 'Downton Abbey' when it felt right and natural for the storylines to come together and when the show was still being enjoyed so much by its fans," director Gareth Neame told Huffington Post.

Meanwhile, Bonneville guaranteed during the Television Critics Association via Access Hollywood that "Downton Abbey" season 6 "very much has a flavor of the end of an era, you know, quite literally." He added that the series was supposed to wrap up after five seasons but executive producer Julian Fellowes felt like he needed another season to be able to tie everything with a neat ribbon and so came a sixth run. 

"Downton Abbey" season 6 premieres Sept. 20 in the U.K and Jan. 3 in the U.S.