When Beaver believes that Kendall, his sexy stepmother, is cheating on his father, Veronica is hired to investigate. What they find in the search is a surprise that neither of them saw coming and find hard to believe if it were not for the evidence. Keith and Alicia take a vacation to Chicago where she runs into an old friend that she would rather not see. While they are away Wallace begins to date Jackie, which Veronica is not thrilled with as she is not fond of this girlfriend her best friend is spending so much time with. Veronica learns something that changes everything she thinks she knows about the town's recent tragedy.
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.