Monogamy

Eun-seong and Na-rae appear to be a happily married couple, admired by those around them. However, one day, Na-rae disappears, and Eun-seong’s hidden psychopathic tendencies come to light. The gentle persona he once had vanishes completely, leaving behind only madness and suspicion. He locks up Gi-hoon, his cherished junior, and Eunbi, whom he had been toying with, to interrogate them about his wife’s whereabouts.