Denise's stepdaughter Greta is a med student who swims ocean marathons and runs off to Africa with a family friend four times her age—and also battles an eating disorder. When Judy, Greta's birth mother, returns from Japan (to which she ran off herself, with a Mexican tennis pro) and tries to ingratiate herself with the husband and daughter she left, Denise must navigate their complicated relationships with each other while attempting to bring Greta's addiction to light—and learning how to live more charitably.