Charlene Amoia

Lily and Marshall are dismayed when they hear that Ted is meeting up with his college girlfriend Karen who they find pretentious. Meanwhile, Barney plays a prank on Marshall which embarrasses him and Lily.

Ted's views on life and love change when he re-evaluates a shirt he previously disliked. Meanwhile, Barney offers Robin money to say outlandish things live on air.

Lily and Marshall tire of Ted's intrusion on their personal space and look for a new flat, and Marshall is delighted when he falls in love with the first flat he sees. Lily can't share in Marshall's joy because she knows they won't be able to afford it because of her hefty credit card bills.

After Marshall sees a documentary about an island in the Pacific used as a landfill, he becomes determined to save the environment.

Ted prepares to move to New Jersey. He also argues with Marshall over an outstanding bill for the flat, the gang recount their many interventions on each other throughout the years and Barney poses as an old man.

Marshall is euphoric when he is offered a job at an environmental advocacy group, but he is persuaded to accept a position at a polluter-defending company instead.