In year three Erica is succeeding on her weight-loss journey with romantic misfortune send her spiraling backwards; Benji Bolton must reach his goal weight without the support of his brother David after a disagreement leaves the brothers estranged.

Alicia's relationship with her boyfriend comes under the microscope in the second year of her weight loss journey; now in her fourth year, Pauline must beg her way back onto the program after quitting when her last weight in didn't go so well.

Dottie faces an unexpected challenge to her weight-loss when her husband's drinking problem becomes intolerable for her and her son. Cynthia starts to wonder if being there for her kids at her current weight is more important than losing more.

In order to keep pace with her daughter Charly's weight loss, Charity must do something she's never done: find a way to go it alone; try as she might, Teretha finds one too many obstacles in the way of continuing with Dr. Nowzaradan's program.

Together weighing more than a ton, siblings Roshanda, Brandie and Clarence set out to lose weight as a family. But the all-for-one approach may be hurting more than it helps when each of them shows signs of heading in the wrong direction after surgery.