"Day One" is the fourth episode of the second season of the American post-apocalyptic drama television series The Last of Us. Written by series co-creator Craig Mazin and directed by Kate Herron, it aired on HBO on May 4, 2025. The episode follows Ellie and Dina in Seattle as they search for Abby, a member of the Washington Liberation Front (WLF) who killed Joel. It introduces WLF leader Isaac, who joined the group after defecting from a government agency.
