Watch ‘How I Met Your Mother’ Season 9, Penultimate Episode Live Stream, Online Free: The Mother Meets Robin On Wedding Day In Episode 22; One Week Until The Finale!

"How I Met Your Mother" season 9's penultimate episode airs tomorrow night - find out where to watch online a free live stream of "How I Met Your Mother" season 9, episode 22 titled "The End of the Aisle." Only one week remains before the "HIMYM" series finale!

If you can't make it to a TV by 8pm EST tomorrow night to catch "How I Met Your Mother" season 9, episode 22, click here to watch the penultimate episode of the series titled "The End of the Aisle" online via a free live stream!

If that doesn't work, CBS also offers episodes on their website to watch online the morning after an episode airs.

The synopsis for the "How I Met Your Mother" season 9 penultimate episode reads: "Half an hour before their nuptials, Barney and Robin both suffer panic attacks, while Marshall and Lily take the occasion to rewrite their original wedding vows."

The bride and groom will be suffering from some major pre-wedding cold feet and endure some intense panic attacks just an hour before they recite their vows, IB Times reports.

In the promo video for "How I Met Your Mother" season 9, episode 22, Barney hyperventilates into a brown paper bag as he sits upside down on a church couch. Robin nearly knocks her wedding band out of the way to escape her wedding, and who does she run into?

The Mother!

Robin will finally meet the Mother in tomorrow night's episode, a moment we've all been waiting for.

"Sometimes even just three deep breaths can change everything," the Mother tells Robin, giving her some last minute advice on her wedding day.

Actress Alyson Hannigan, who plays Lily, also teased that the show has a curveball or two in store for her character Lily and Marshall, Latino Post reports.

"There are a lot of answers to questions that you didn't know you had - or never knew to ask," Hannigan said. "They really, definitely give the fans everything in the series finale."

She went on to say that Robin's endgame surprised her the most. "Although I guess that's not really a surprise, because it's sort of been addressed in the past. You'll see."

Catch "How I Met Your Mother" season 9, episode 22 on Monday night, March 24 at 8/7c on CBS.