Henry's free-spirited niece, April, shows up on his doorstep after moving from Delaware to start a song writing career, and he reluctantly allows her to stay in the guest bedroom of his apartment until she's able to get established. However, their relationship starts off on the wrong foot, and Henry hopes it isn't too late when he finally figures out why.

April secretly arranges for her father Bill to meet face to face with his brother Henry, so they can attempt to reconcile after a petty childhood dispute caused them to stop speaking forty years ago. The effort may be for naught, however, when Bill eats a piece of cheesecake baked by Monroe, who did not realize it was an old Russian recipe for homemade poisoned rat bait.

In order to reduce the cost of a trip to Europe, Jackie and Sara swap apartments with an English couple who wants to visit America. Henry's misgivings are confirmed when he accidentally opens a piece of their luggage that contains a high powered rifle, and concludes they are on a mission to assassinate a Russian ambassador.