Quinn is getting more anxious by the minute as she expects the baby, plus, Regionals is finally here, but will the Glee Club be able to triumph over Sue Sylvester’s plots?

Mercedes helps Quinn gets in touch with her “funky” side. Meanwhile, Terri Schuester returns with a plan while Will has some plans of his own for Sue\

Mr. Schuester thinks he has gotten the upper hand over Sue; Quinn gets in touch with her “funky’ side.

Mr. Schuester’s high school nemesis (Neil Patrick Harris) causes trouble for the glee club; Rachel struggles with a personal issue; Artie goes on an adventure in his dreams.

A sore throat impacts Rachel’s singing; Kurt tries to impress his father; Puck hopes to elevate his social status.

Mr. Schuester starts an investigation when a salacious list about members of the glee club circulates the halls of McKinley High. Meanwhile, Sue is mortified when a video of her performing the Olivia Newton-John classic “Physical” surfaces

When Kurt sets his dad, Burt, up with an unexpected partner his plan for a nuclear family may backfire. Sue demands that the Cheerios! go on a crazy diet in preparation for a big interview with “Splits” magazine and April Rhodes returns to save Will and the glee club

Mr. Schuester is concerned that the girls in the glee club are being disrespected and bullied by the guys. Looking to Madonna and her musical message of equality as inspiration, he challenges the entire team to choose Madonna songs as their next assignment in the hopes that the girls embrace her strength, independence and confidence [...]

Rachel and Finn’s romance hits a rocky patch when she becomes involved with a competitor (guest star Jonathan Groff), forcing Mr. Schuester to have a talk with the competitor’s coach (guest star Idina Menzel).

Quinn’s secret unravels as the sectionals approach, threatening club cohesion at the worst possible time. Meanwhile, Sue’s scheming continues apace (and then some); and Will ponders an important decision as Emma and Ken’s wedding nears. Grace Hitchens: Eve.