Five years after the events in Salt Lake City, a now 19-year-old Ellie makes a discovery while on patrol with her best friend Dina. Back in Jackson Hole, Joel seeks help to mend his relationship with Ellie.

As a storm brews in the mountains, the people of Jackson Hole prepare for the worst amid increased sightings of Infected. Meanwhile, Abby weighs her options.

The WLF makes a dangerous discovery... at a great cost. Later, Ellie must decide whether to continue with her plan – and risk putting Dina in danger – or give up on her quest for justice.