Tunnels takes you inside the Agency's secret mission Hummingbird using a new US subterranean spy satellite deployed over Korea's DMZ. A hug underground invasion tunnel excavated by the DPRK into South Korea is found. Lt. Kyle Benjamin is assigned on a solo-mission to infiltrate and destroy the tunnel. The Agency must select the best means to accomplish all their goals while keeping their actions secret from the World. Like a fly on the wall, watch the backroom drama unfold as North Korean civilian, Tae, uses a lava tube to secure food and medicine from the south to provide for his family living in the north. Glimpse into the recruitment, training and deployment of the DPRK's newest covert agent Angelie. Adopted from Korea, raised in the US, assigned as a teacher inside a small village in the DMZ where her loyalties are tested. Will these new recruits survive their first mission? Can the Agency destroy the tunnel without being exposed? Follow this non-stop action packed journey, a conflict that started thousands of years ago and still exists today.