At nearly 450 pounds, Bob is a Wisconsin police officer in danger of losing his job. He is now required by the state to pass a "Fit for Duty" test, and in desperation he reaches out to Chris Powell for help. Though Chris takes him on, they hit a roadblock during the first workout when Bob re-injures his knee with a loud "pop!" and must decide whether to continue with the program or delay til next year. He commits to work on his weight loss and uses boxing and swimming as his main fitness regimens. At the 6-month mark, Bob and his wife, Kelly, travel to Paris to renew their vows, and Bob rides the last leg of the Tour de France with Chris. However, he injures his other knee before the year is out and must undergo surgery, which takes him away from the program for a full month. Can he lose the weight and save his job?