Washington State follows investigator David Paulides as he examines a series of unexplained disappearances in and around Mount Rainier and Olympic National Park, where hikers, climbers, and experienced outdoorsmen vanish without tracks, scent trails, or clear cause. Through interviews with families, witnesses, and search personnel, the film contrasts known environmental dangers - severe weather, terrain, and hypothermia - with unsettling anomalies. Some of these include aircraft debris fields, unusual patterns in search failures, eyewitness encounters, and reported aerial phenomena dating back to the 1946 Curtis Commando crash and the dawn of the modern UFO era. As grief-stricken families search for closure and investigators compare evidence against established profile points, the documentary challenges viewers to consider whether these cases can be explained by nature alone - or if something unknown operates within the wilderness