For the past eight years, we've been taken inside the life of Ted Mosby and his best friends.
We've experienced the highs, the low, the humor, the heartbreak. And, somewhere out there this whole time, Ted's future wife was just waiting to be met.
What the heck was she doing that entire time? How I Met Your Mother Season 9 Episode 16 will answer that question.
The special, milestone episode (number 200!) will shift the focus to Cristin Milioti as The Mother and recount all she's been doing since the series first came on the air.
And look who will return to the sitcom for the unique installment! Watch How I Met Your Mother online and then toggle through a photo gallery from Monday's episode: