KDrama thriller Happiness releases its first episode teaser. 

The apocalyptic urban thriller stars Han Hyo Joo, who plays the role of Yoon Sae Boom, a tactical agent of Seoul Police Operations Unit, and Park Hyung Sik portrays Jung Yi Hyun, a police detective in the violent crimes division. Joo Woo Jin takes the role of a member of the Armed Forces Medical Command in charge of finding the disease and stopping it from spreading. 

Happiness takes place in the future, in an apartment with a social hierarchy. The apartment is suddenly sealed after a new infectious disease appears. The plot summary on VIKI reveals that the series will depict scenes of psychological battles and desperate struggles for survival. The drama has triggering themes that may not be suitable for all Kdrama addicts and newbies.

Happiness will premiere on November 5 at 10:40 pm, KST. It will be available on Viki.