'How I Met Your Mother' Season 8: Barney's not the only one with jitters

We've already seen evidence that Barney is not exactly all in, wedding-wise, on the Season 8 premiere of "How I Met Your Mother."

But in this new preview of the season premiere, we learn that Mr. Stinson (Neil Patrick Harris) isn't the only one with cold feet. Robin (Cobie Smulders) is also having a few jitters.

As Marshall (Jason Segel) and Lily (Alyson Hannigan) are attempting to keep Barney in the building, Robin confesses to Ted (Josh Radnor) that she doesn't want to go through with the wedding.

Also of note: At the beginning of the clip, there's text on screen that reads "10 hours earlier ..." -- earlier than what? Does this mean we'll actually see Barney and Robin exchange vows, or is there a depressing McLaren's ending to this story?

We're guessing the former, but we'll know for sure when "How I Met Your Mother" premieres at 8 p.m. ET Monday, Sept. 24 on CBS.