Season 6 Episode 1 episode 1

HIMYM Season 6 Episode 1 "Big Days ": Official Synopsis

Official episode preview for "Big Days" - How I Met Your Mother Season 6 Episode 1.

TED RUNS INTO AN OLD FLAME WITH WHOM THINGS DIDN'T END WELL, ON THE SIXTH SEASON PREMIERE OF "HOW I MET YOUR MOTHER," MONDAY, SEPT. 20.

Rachel Bilson ("The OC") Returns as Cindy

"Big Days" — When Ted and Barney argue about who has "dibs" on a hot girl, Ted realizes that she is there with Cindy, a girl he previously dated who is also the roommate of his future wife. Meanwhile, Robin is heartbroken over Don, and Marshall can't keep quiet about his desire to start a family, on the sixth season premiere of HOW I MET YOUR MOTHER, Monday, Sept. 20 (8:00-8:30 PM, ET/PT) on the CBS Television Network. Rachel Bilson ("The OC") returns as Cindy, Ted’s former flame and the roommate of his future wife.