Finn plans PSY's "Gangnam Style" to be the centerpiece of their performance, and he needs the students to up their game to compete with the Warblers.
Jake admits to Ryder that he hung out with Marley, but offers to pull back if it will put them at odds again; though disappointed, Ryder doesn't object.
Making her first return visit to Mc Kinley for Thanksgiving, Quinn strolls across the auditorium stage and is joined by a guitar-playing Puck on a mash-up of Simon & Garfunkel's and Phillips Phillips', Homeward Bound/Home and gradually they're joined by more harmonizing alumni: Mike, Santana, Mercedes and Finn.
Finn decides to train the new joiners of the New Directions by pairing them up with the different alumni and plans PSY's Gangnam Style for the New Directions' big number at Sectionals.
In New York, Kurt invites Isabelle and her friends to celebrate Thanksgiving with Brody, Rachel and him.
At Breadsticks, the alumni note the absence of Rachel and Kurt, not expecting them to show.
Later, Finn pairs them up with his students to help master whatever's necessary for Sectionals.
Thanksgiving is the eighth episode of Glee's fourth season and the seventy-fourth episode overall. Mercedes, Mike, Puck, Quinn and Santana return to Mc Kinley for the holidays.
Kurt and Rachel however, decide to stay in New York for Thanksgiving to avoid drama, breaking the promise they made back before graduation about returning to Mc Kinley on vacations."Just like we promised." Later, Marley recalls her long-time dream of stepping onto a stage to perform for a crowd - and her dream's about to come true at Sectionals.She vows not to let up on her weight-loss efforts before the competition, out of concern about letting down the glee club - especially Jake and Ryder.Kurt and Rachel agree that returning to Lima feels sad and unproductive, so they plan to indulge each other at their first New York City Thanksgiving away from home.Marley continues to lose weight and it eventually results in a major twist, affecting the New Directions.It was directed by Bradley Buecker and written by former House writers and new consulting producers Russel Friend and Garret Lerner.