Butterfly is a spy thriller that delves into intricate family relationships amidst the perilous realm of international espionage. The story revolves around David Jung, portrayed by Kim, a mysterious and highly unpredictable former US intelligence operative residing in South Korea. His life is shattered when the repercussions of a past, impossible decision resurface, leading to him being hunted by Rebecca, played by Hardesty, a lethal and sociopathic young agent tasked with his assassination, and Caddis, the ominous spy organization she is affiliated with. Butterfly premieres August 13 on Prime Video.