Plot summary
Joel takes Ellie to Lincoln, Massachusetts, hoping to pass her and the mission to his allies Bill and Frank. In a flashback, Frank stumbles upon Bill, a paranoid survivalist who reluctantly takes him in. The two form a romantic relationship, sharing a love of music and food. Years later, Frank contacts Tess by radio and the couples enter a tenuous friendship. In the present, Frank is terminally ill and asks Bill to marry him and assist his suicide. Unable to live without him, Bill takes his life alongside Frank. Joel and Ellie arrive and discover a letter from Bill: he explains that safeguarding Frank gave his life meaning and leaves all his equipment for Joel to protect Tess.
Swallowing his grief, Joel reluctantly agrees to bring Ellie with him to find Tommy, hoping he can help them locate the Fireflies. Ellie secretly steals Frank's pistol before she and Joel depart for Wyoming in Bill's truck.
Credits
Adapted from Wikipedia contributors, The Last of Us season 1. HTML formatting and reference markers removed.