Fifteen-year-old Colie, a former fat girl, spends the summer working as a waitress in a beachside restaurant, staying with her overweight and eccentric Aunt Mira, and trying to explore her sense of self.
Seventh-grader Tucker needs to come up with a winning science fair project in a hurry, so he uses his fat friend Angelo as an experimental subject and in the process learns about more than just science.
Fourteen-year-old Glenda, extremely unhappy after regaining the pounds she worked so hard to lose, meets the very overweight Giselle and discovers the world of plus-size modeling, but she will have to stay fat to keep working as such a model.
Fifteen-year-old Tristan deals with intensified criticism about his weight when the nutrition-obsessed daughter of his mother's boyfriend, Frank, moves in.