A jealous, envious man seeks inner peace while feeling isolated in a world where others seem to succeed.

Set in the 1990's, Park Ha Kyung teaches Korean literature at a high school. To escape her ordinary days, Park Ha Kyung decides to take one day trips on Saturdays. During her trips she walks around, eats different foods, and meets people.

When unidentified parasites violently take over human hosts and gain power, humanity must rise to combat the growing threat.

Two former lovers cross paths on a flight to Korea, stirring memories of their chance meeting in 2008, when they found love amid Seoul's chaos before life pulled them apart.

At work, she's a renowned assassin. At home, she's a single mom to a teenage daughter. Killing? That's easy. It's parenting that's the hard part.

Professor Se Jeong attends a biotech conference, only to witness it spiral into catastrophe when a rapidly mutating virus is unleashed. As the outbreak spreads and the infected begin to transform, authorities seal off the entire facility.