The end is coming for “Downton Abbey.” Sunday’s installment will be the penultimate episode of the series, but the PBS show isn’t putting the brakes on the drama. Expect some crazy events to happen in Season 6, episode 8.

“Two romances get complicated,” the synopsis warns. In last week’s episode, Mary (Michelle Dockery) dumped Henry (Matthew Goode) while Edith (Laura Carmichael) told Bertie (Harry Haddon-Paten) that she’d consider his marriage proposal. Expect major developments for these romances — but not all of them will be good. Plus, the sisters will have a major confrontation.

“The sisters’ long-running feud comes to a boil, resulting in ‘the row we all knew was coming.’ (Those are Edith’s words, not mine),” TVLine reports. “Both Michelle Dockery and Laura Carmichael turn in powerful performances; it’s a real treat for fans who have watched their characters’ relationship develop (or not) over the years.”

Watch the “Downton Abbey” Season 6, episode 8 trailer below:

Their cousin Isobel (Penelope Wilton) will be busy with her own romantic drama. Amelia (Phoebe Sparrow) is trying to make amends with Isobel so that she and her husband don’t have to take care of Lord Merton (Douglas Reith). Isobel “puts her foot down,” but what does that mean for her relationship with Lord Merton?

Elsewhere, the servants will be trying to adapt to modern times, so several will be engaged in their new job opportunities. With Violet (Maggie Smith) on vacation, Spratt (Jeremy Swift) will go down an unexpected career path while Molesley (Kevin Doyle) starts his teaching job.

Also embarking on a new career path, Mrs. Patmore’s business venture will present new challenges. “Mrs. Patmore provokes a scandal,” the summary teases. It seems her first customers at the bed and breakfast weren’t exactly reputable. How will she be able to save her business?

The synopsis also mentions that Barrow “takes a fateful step,” but it isn’t towards a new job. His actions could potentially affect the rest of his life.

The last episode before the series finale is so jam-packed with drama that it won't fit into the usual hour. Episode 8 will tack on an extra 15 minutes.

“Downton Abbey” Season 6, episode 8 airs Sunday at 9 p.m. EST on PBS.

Downton Violet and Isobel Isobel (Penelope Wilton) and Violet (Maggie Smith) share a smile in "Downton Abbey" Season 6, episode 8. Photo: Nick Briggs/Carnival Film & Television Limited 2015 for Masterpiece Downton 608 Mary (Michelle Dockery) will admit why she really broke up with Henry (Matthew Goode) in "Downton Abbey" Season 6, episode 8. Photo: Nick Briggs/Carnival Film & Television Limited 2015 for Masterpiece Downton 608 Robert (Hugh Bonneville) and Cora (Elizabeth McGovern) help out one of their servants in "Downton Abbey" Season 6, episode 8. Photo: Nick Briggs/Carnival Film & Television Limited 2015 for Masterpiece