In the “Last of Us,” people who have the disease are simply called “infected.” Before Joel met Ellie, he had a 14-year-old daughter named Sarah (Nico Parker). During the “Last of Us” season 1 premiere, Joel and Sarah escape an infected only to get shot at by an armed soldier. Joel survives the shooting, but Sarah dies in his arms.

After a two-year wait, 'The Last of Us' Season 2 premieres on Sunday. Here are the key things you need to remember from the first season.

When we last saw Joel and Ellie in the Season 1 finale of The Last of Us, they were both coming to terms with everything that had gone down at the Fireflies' Salt Lake City hospital base. While Ellie (Bella Ramsey) was unconscious for the entirety of the killing spree that Joel (Pedro Pascal) went on to save her from being sacrificed in the name of finding a cure for the zombie fungus pandemic that had devastated humanity,