VIDEO: Sneak Peek - 'Lobster Crawl' Episode of CBS's HOW I MET YOUR MOTHER

On the next episode of the CBS comedy HOW I MET YOUR MOTHER titled 'Lobster Crawl,' Robin is determined to get Barney back no matter what it takes. Meanwhile, Ted fills in as Marvin's Nanny, leading Marshall and Lily to realize that Ted is using baby Marvin to replace his other baby…the GNB building. The episode airs Monday, Dec. 3 (8:00-8:30 PM, ET/PT) on the CBS Television Network. Get a first look below!

HOW I MET YOUR MOTHER is a comedy about Ted and how he fell in love. It all started when Ted's best friend, aspiring environmental lawyer Marshall, proposed to his college sweetheart, Lily, a kindergarten teacher. Now that the two have had a baby, Ted realizes that he had better get a move on it if he too hopes to find true love.

Helping him in his quest to find his future wife is Barney, a friend with endless, sometimes outrageous opinions, a penchant for suits and a foolproof way to meet women. When Ted meets Robin, he's sure it's love at first sight, but after a whirlwind romance with her, he realizes destiny has something else in store for him. The series is narrated through flashbacks from the future.