While helping her classmate Mandy search for her missing Jack Russell terrier, Veronica stumbles onto a bigger mystery, which affects pets all over Neptune.
Meanwhile, tensions mount in the Echolls family as Trina tries to convince the now-retired Aaron to take a part in her new boyfriend's independent movie. Later, Weevil is arrested for breaking into the Kane residence and taking something from Lilly's room.
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.