My Secret Terrius

A South Korean woman is suddenly widowed under suspicious circumstances and moves into a new apartment complex, where she discovers that her reclusive neighbour is a former intelligence operative hiding from his past. She enlists his reluctant help to uncover the truth behind her husband's death, drawing both of them into a dangerous web of corporate espionage and government conspiracies. As they work together, a tentative romantic connection develops between them whilst the stakes grow increasingly perilous.