650-lb Melissa begins her seven-year weight loss journey.

650-lb Melissa struggles to get to her ideal weight.

750-lb Henry begins his weight loss journey in the hopes of transforming himself in time to attend his high school reunion.

Ashley's career was derailed after she was let go due to her excessive weight. Will she be able to turn her life around and achieve her goal of owning a childcare facility?

Steven Assanti's dysfunction escalates, pushing his relationship with Dr. Nowzaradan to the brink, and a risky decision is made to save Steven's life, while brother Justin takes the leap to go to Houston to finally accept help.