12 strangers will move into the Big Brother house and learn that they will be 'kickin it old school' this summer, high school to be exact. The House Guests will be shocked to learn that they will be playing the game in one of four familiar high school cliques - popular, athletes, brainiacs and off beats.

Jessie from Season 10, the current HoH returns and the other houseguests do all they can to avoid a nomination. The stakes are raised when cliques are punished for losing the food competition.

The mood in the house quickly turns sour as the houseguests compete for the first power of veto. Lydia tries to ally herself with the athletes and Ronnie walks a fine line.

Lydia causes a ruckus, while Russell does all he can to make sure Braden goes home. Who will be evicted from the Big Brother house? Also, the houseguests compete to win HoH by predicting how fans voted in an online poll.

The final three reminisce about their experiences in the Big Brother house. Kevin, Natalie and Jordan enjoy a moment together before mentally preparing to duke it out for the win.

In the first ever 2-hour season finale, one houseguest is crowned the winner and awarded $500,000, and all the houseguests are reunited for the first time. Also, Julie reveals which houseguest America chose as their favorite and awards the lucky juror $25,000.