While trying to navigate the everyday drama of high school, the smart, fearless, 17-year-old Veronica Mars also moonlights as an apprentice private investigator out to solve her wealthy town of Neptune's toughest mysteries. After coming to the aid of the new kid, sophomore Wallace Fennel, who's been duct-taped to the school's flagpole, Veronica ends up incurring the wrath of the thugs who put him there, Eli "Weevil" Navarro and his P.C.H. Biker Boyz. To get Weevil and his gang off her and Wallace's case, Veronica devises an intricate plan that helps some of Weevil's cronies avoid trouble with the law.
Meanwhile, defying her father, Keith Mars, the disgraced former sheriff turned private eye, Veronica pursues a late-night case of adultery against billionaire Jake Kane, only to make an unsettling discovery about her mother, who abandoned Veronica and Keith a year ago.
Veronica Mars is set in the wealthy, seaside community of Neptune, where the rich and powerful make the rules, own the town and the high school and desperately try to keep their dirty little secrets just that secret. Unfortunately for them, there's Veronica Mars, a smart, fearless 18-year-old apprentice private investigator, who negotiates the halls of Neptune High each day like any average teenage girl, while at night helps her private-eye father uncover some of the California beach town's toughest mysteries.