The guys are invited to a wedding of a mutual friend. Nick, fearful he will run into his ex-girlfriend Caroline, asks Jess to be his date. Meanwhile, Winston takes his role as an usher very seriously and gets competitive on the dance floor with a young guest. Schmidt not only catches the eye of a beautiful woman, but also his "frenemy" Gretchen whom he sleeps with at every wedding reception.
Spoilers ahead. Coverage follows the scope labeled below.
Complete story — includes the ending
Nick is worried that he will run into Caroline ( Mary Elizabeth Ellis ), his ex-girlfriend, at a mutual friend's wedding the guys are invited to. He asks Jess to be his date and pretend to be his girlfriend. At the wedding, Winston takes his job as usher far too seriously. Schmidt attempts to woo Brooke ( Katie Cassidy ), a former crush. He also catches the eye of his sexually abusive " frenemy," Gretchen ( Natasha Lyonne ) - whom he goes to bed with.