n the aftermath of Robin and Barney's break-up, Robin states that she wants to take a break from being in a relationship. Ted and Marshall are certain by this statement that she'll soon find her next long term boyfriend. Barney, on the other hand, is all set to go back to his womanizing ways, and turns to his "playbook", where he's written all the scams he's used to pick up women in the past. When he uses the scam he calls 'the Lorenzo Von Matterhorn' to pick up Shelly, a friend of Lily's, who Lily has been "saving" for Ted for three years, an angered Lily takes her revenge by staging her own elaborate scam to steal Barney's playbook. She vows to post the playbook on the Internet. But curiosity may get the better of Lily, and Marshall, Ted and Robin when Barney starts to stage the scam he calls 'the scuba diver', the scam that was on the last page of the playbook before he tore it out prior to the book being stolen.

Résumé de IMDb.com