Professor Se-jeong is thrust into a bloody nightmare when a rapidly mutating virus is released during a biotech conference causing authorities to seal the facility. Trapped inside with no escape, Se-jeong along with a small group of survivors must fight to stay alive while the infected undergo horrific transformations.

A dedicated fangirl lands a job at a fashion company, only to discover it was co-founded by her ultimate idol. Determined to remain professional, she hides her identity, but is quickly thrown off course by the company's workaholic CEO. As secret unrequited feelings and hidden personal struggles entangle the trio, she finds herself torn between her lifelong obsession and an unexpected new connection.

In the Joseon Dynasty, two friends who grew up together — one the master and one the servant — reunite post-war as enemies on opposing sides.