Marin explores whether men and women can be friends once they've slept together, and she's eager to test her theory on her trip to Anchorage with Jack as she can also get a dose of culture there. While there, Jack suffers an allergy attack at the opera and his brother Ian shows up as his emergency contact. In hospital, doctors discover a bullet in Jack's left lung. Elsewhere, Patrick begins to wonder if there is a problem in his relationship with Annie, because she always asks him to leave right after they've been intimate. Celia finds out the reason - she snores. Meanwhile, Ben gets tired of having to sneak around with Sara and so he asks Theresa to move out.