The WOW Signal – a powerful, unexplained burst of radio waves detected in 1977, has captivated scientists and dreamers alike for decades. Was it a message from an alien civilization? This documentary dives deep into the history of radio astronomy, the construction of the legendary Big Ear telescope, and the mystery behind the most intriguing signal ever recorded in the search for extraterrestrial intelligence. Join the journey through science, skepticism, and cosmic wonder as we ask: Are we truly alone in the universe?