Episode 5 season 5 Geothermal Escapism of Community through Abed's eyes. Trobed so warning, I guess? Happy ending.

Troy Barnes left Greendale Community College when Pierce offered him his remaining shares of Hawthorne Wipes (worth over 14 million dollars), given that he would sail around the world to become his own man. It has been over a year since Troy left, and the study group has no idea of his whereabouts - no one except Abed. As Abed had mentioned before, he planted geo trafficking devices on everyone in the study group, allowing him to track their whereabouts at any given time. This includes Troy, Abed's best friend, whom Abed has been tracking for over a year. When Abed realizes that Troy has been in Los Angeles for a couple of months already, he is compelled to go down there and investigate the situation for himself. Except he can't because he doesn't have any money or a good enough excuse to tell the rest of the study group about his extended absence during the summer. That is until Fox offers him a job as a production assistant, and offers to subsidize his expenses to Los Angeles. Now with enough money and a compelling excuse, Abed goes on his journey to find Troy in Los Angeles, to get the answers to the questions that constantly troubled his mind, and to hopefully convince him to return to Greendale so that everyone would be reunited and truly happy again.

Abed decides to do a whole bunch of college experiences with Troy and the last surprises him.