Secret Reunion

A North Korean undercover spy living in South Korea as an ordinary citizen, Ji-won is assigned a perilous mission to assassinate a high-ranking figure. After a betrayal by a fellow agent, he shifts between roles, wary of both sides and determined to safeguard his own family. His past drives his cautious, adaptive approach to danger and loyalty.

A shadowy figure linked to a broader network, Shadow embodies the hidden forces that steer political intrigue. He manipulates events and keeps his true loyalties concealed until a final confrontation reveals his role as the traitor behind the cascade of danger. His presence showcases the reach of power beyond direct actions.

A dedicated NIS agent who tries to foil the assassination, Han-kyu pays a heavy price as he becomes scapegoated and discharged. He pivots to private investigation, chasing fugitives and unraveling conspiracies while wrestling with guilt and a sense of duty. His evolving ethics show a realist, persistent resolve to prevent further tragedy.

A fellow North Korean operative who betrays the mission by switching allegiance to South Korea, Tae-soon becomes a dangerous variable in Ji-won's arc. His choice catalyzes the ensuing chase and raises the stakes for everyone involved. His actions test loyalty and reveal the cost of betrayal.

A North Korean pastor who acts as an informant for Ji-won, Lee Ki-hoon provides crucial information that shapes the path to safety for Ji-won's broader family. His faith and position give him a unique moral perspective within the espionage labyrinth. His role underscores the human networks that undercut or support political machinations.

A North Korean professor who betrays by leaking secrets to the NIS, Sung-hak embodies the danger of compromised knowledge. His actions complicate the hunt for the truth and contribute to the tangled web of betrayals surrounding Ji-won's fate. His disloyalty highlights the precarious nature of intelligence communities.