Gregory Michael

When Barney and Quinn start living together, Barney's reluctance to throw out any of his old possessions makes the gang doubt his faith in the relationship. Ted, Marshall and Barney hold their triennial 'trilogy time' event, at which they watch the 'Star Wars' film trilogy and try to picture how their lives will have developed in another three years.

Casey uses her political shrewdness to overturn a ban on participating in the annual all-Greek 'undie run' where competitors run in their lingerie.

Max has gone back to England with a broken heart. Casey, still hurt from her encounter with Cappie, helps her brother with his chemistry project, but things turn awkward when Cappie also offers his help.

Rusty seeks help in trying to get his grades back up while Casey and Evan monitor a dry weekend, but things end up going a little unexpectedly.

The ZBZ house holds a Founders' week and the girls try to raise funds while Rusty worries about Jordan's dwindling interest in school and Cappie manages a date with Lana.

When Casey hears that there is no final competition for sororities to win blue ribbon points due to budget cuts, she begs Katherine to consider adding an event.