Georgia is on a quest to get a boyfriend. She is convinced that her life is a disaster because she lacks one, and she documents her "desperate" attempts to snag the "Sex God" (a local boy named Robbie).
After the events of the first book (Angus, Thongs and Full-Frontal Snogging), Georgia is trying to navigate her complicated love life—specifically her ongoing saga with the "Sex God" (Robbie) and the "Italian Stallion" (Massimo). The "big knickers" in the title refers to one of Georgia's many fashion disasters and her tendency to use humor to cope with the mortifying reality of being a teenager