After Ted runs into an old girlfriend, he tries to make amends with her since he cheated during their relationship. Meanwhile, Marshall and Lily make a bet with Barney that could force him to wear Marshall's ducky tie.
The night before the annual Rosewood Charity Fashion Show, Allison's mother reappears in town and requests that the remaining girls model in the show in honor of her deceased daughter.
Jeff (Patrick Warburton) gets jealous when Audrey (Megyn Price) gets a raise. Adam (Oliver Hudson) and Jennifer (Bianca Kajlich) reap the benefits over a mistaken public wedding proposal. Russell (David Spade) uses Timmy (Adhir Kalyan) to help him find out why Liz (guest star Wendi McLendon-Covey) is not interested in him.
