This week, the contestants are left in the dark - literally - during a wild baked goods temptation, with the winner gaining considerable power that could completely change the competition. Later, host Alison Sweeney wakes the contestants up to gather them for the challenge, which will last from sun up to sundown - the longest challenge in Biggest Loser history. One contestant struggles with a decision about whether to stay at the ranch or go home, and then an elimination round sends another contestant packing.

This week, trainers Bob and Jillian take their teams through very unusual workouts unlike anything they've done before. Later, Dr. Huizenga gives the contestants a very encouraging six-week progress report of how far they've come and how much healthier they are since coming to the ranch. Then the teams square off in a difficult balance beam challenge, with the winning team getting something very special from home.

This week, contestants put their food knowledge to the test during a calorie quiz that will give the winning team a dramatic advantage in the challenge. Later, emotions run high when one contestant confronts another on the opposing team before the challenge, which leaves the players soaring to new heights. Then one contestant stuns everyone with a record-breaking weigh-in before an elimination round sends another contestant home.