(flashback of Stuart and Claudia talking in their apartment)
Stuart: Uh, by the way, honey, Ted stopped by and I told him he could bring his date to the wedding. Barney: You don't bring a date to a wedding. I'm taking her to the wedding. Marshall: Oh, you went around the bride. ROBIN'S APARTMENT
(Ted walks into Robin's apartment)
Ted: Oh yeah, I thought about leaving it at home, but I figured I don't wanna get there and realize I need it and have to go all the way back to get it, so, yeah, I brought it. Robin: (to Ted) They want me to anchor the news tonight. So you admit it, the groom should have an equal say. That's awesome.
Plan: A: a friend's wedding; Q: Where did Ted bring Robin as his date? A: the wedding; Q: What does Ted and Marshall want to resume? A: last-minute; Q: What type of opportunity at work causes Robin to cancel? Summary: Ted's decision to bring Robin as his date to a friend's wedding leads to an argument between the bride and the groom that abruptly ends the wedding. Ted and Marshall comfort the bride and groom and urge them to resume the wedding. They agree, but a last-minute opportunity at work leads Robin to unexpectedly cancel, leaving Ted to go alone.