Plot: Season 12 of MASTERCHEF is all about redemption, when All-Star competitors from the last 11 seasons return to the show to see if they have learned from their past mistakes. For the first time ever, MASTERCHEF is re-opening the door to some of the most memorable and talented cooks in the competition's history, including two MASTERCHEF Junior Edition cooks now competing as adults! 40 chefs get called back to audition, but only 20 will claim a coveted white apron