Barney and Robin join Ted and Marshall at the bar. Barney: They have a big problem. Barney: You need to be angry. Flashback Barney and Robin are in a chairlift. He and Ro-Ro are the best pair now. Robin: I think.
Plan: A: Barney; Q: Who thinks he and Robin are the perfect couple? A: relationship advice; Q: What does Barney give to Marshall? A: a big mistake; Q: What does Barney's advice to Marshall turn out to be? Summary: Barney, thinking he and Robin are the perfect couple, gives relationship advice to Marshall, which turns out to be a big mistake. Ted and Robin have some noisy neighbours.