Plot

Hyunjun and Sawoo, best friends turned rivals in the South Korean special forces, find themselves enlisted by the covert NSS agency. Their lives become complicated as they both develop feelings for Seunghee, a stunning yet dangerous profiling expert. As a nuclear terror threat looms, the two men must confront each other, leading to a critical choice that tests their loyalty. In the heat of the conflict, Seunghee's intriguing secret comes to light, altering the dynamics of their relationships and the mission at hand.