Master chefs know how to work under pressure, but how well can they do fast food? This week's elimination challenge puts the cheftestants to the test in a traditional Southern California eatery, the Drive Thru. The cheftestants will have to operate a fast food drive thru, from the grill to serving up their best meals and all in less than two minutes.

The tables are turned in this week's quickfire when the cheftestants become the judges and have to critique their fellow chefs. Pop Rock group Maroon 5 drops by and challenges the chefs to create a feast fit for a rock star, but it's not that easy. Once again the tables are turned and the chefs are taken out of the kitchen and brought to a surprise location to prepare their meals.

In this week's quickfire challenge the chefs must use each of their five senses to identify mystery ingredients - however they can only use one of their senses at time. In the elimination challenge, the masters help a man propose to his unsuspecting girlfriend on her favorite show, "Top Chef Masters."