The Glee kids face stiff competition from the Warblers and Aural Intensity (coached door Sue) at the Regionals, so to impress judges Tammy Jean Albertson (Kathy Griffin) and Sister Mary Constance (Loretta Devine)...
The Glee club works on a duet assignment, and Finn and Rachel plan to throw the competition so that Sam can have a shot at winning. Meanwhile, a love driehoek between Mike, Tina and Artie develops.