Coach Shannon Beiste's (Dot-Marie Jones) emotional episode is coming up in the upcoming installment of "Glee" season 6 scheduled to air this week. 

Considered as one of the most controversial and heartwrenching episodes of the season, it is where the ever-supportive football coach of McKinley High School will decide to embark on a difficult journey of transitioning to become a man. 

Beiste, who was once a domestic abuse victim as her former husband beat her up, will finally come to terms with her real sexuality and will announce to the world that she is planning to become officially known as Sheldon Beiste. 

"Glee" season 6 episode 7 titled "Transitioning" will also feature the return of former glee club member Unique Adams (Alex Newell) to the McKinley High auditorium to sing "I Know Where I've Been" backed with an amazing 200-member choir composed of transsexuals. 

Meanwhile, Will Schuester (Matthew Morrison) will also have a journey of his own, as he tries to teach the group Vocal Adrenaline the value of tolerance. However, the trailer for the upcoming episode shows that the former New Directions coach will have a hard time teaching anything to his proud new students since all they ever care about is to win. 

Will this prompt Mr. Schue to return to his beloved group in McKinley High?

Also, the New Directions will be offering their full support to Rachel Berry (Lea Michele) after she discovers that the home that she grew up in had been sold after her parents' divorce. This could also prompt Rachel's own transition in accepting a major change in her life. 

Some of the songs that will be featured in "Glee" season 6 episode 7 include: the classic Bon Jovi song "You Give Love a Bad Name"; Macklemore & Ryan Lewis' "Same Love" (featuring Mary Lambert); the catchy song from Meghan Trainor titled "All About That Bass"; Betty Who's hit single "Somebody Loves You"; the iconic "Time After Time" from Cyndi Lauper; and "I Know Where I've Been" from Hairspray that will be sung by Unique and 200 other transsexuals. 

The episode will be aired on Friday, Feb. 13.