Vagabond

About:

After his nephew dies in a mysterious plane crash, Cha Dal Gun is driven to uncover the truth behind the tragedy. His search leads him into a dangerous world of corruption, conspiracy, and hidden agendas surrounding the crash. Meanwhile, Go Hae Ri, the daughter of a fallen marine, abandons her hopes for a quiet life and becomes an agent for the National Intelligence Service (NIS). As their paths converge, the two work together to expose a far-reaching cover-up that threatens powerful figures and puts their lives at risk.