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 volunteers to assist in planning a ball to raise money to rebuild the Gamma Psi house.

ZBZ tries to get back to number one whilst Lana tries to corrupt Rusty when she, Rusty and Cappie hang out together.

Casey and Cappie are finally back together. Elsewhere, Rusty and Dale's argument comes to a head and the ZBZ girls prepare for `Song Fest'.

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

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