Han Hyo Joo and Park Hyung Sik stars as Yoon Sae Bom and Jung Yi Hyun. Their characters are friends since their teenage years, and are now “married” for the sake of living in an apartment. “Happiness” follows their lives took a turn when the mad person disease, which makes people act rabid like zombies, forced the city to go into lockdown.
Here are some behind-the-scene clips featuring the cast members.