Happiness is set in a dystopian world where infectious diseases are a part of everyday life. It traces the lives of people in one apartment block where different floors are allocated to people based on their social standing. When a new virus emerges, one where people suffer from unquenchable thirst, the rush for water ignites a war.
| Directed by: | Ahn Gil-ho |
| Written by: | Han Sang-woon |
| Starring: | Park Hyung-sik, Han Hyo-joo, Jo Woo-jin |
| Extended Cast: | Seo Hyun-chul, Jung Jae-eun, Baek Hyun-jin, Han Da-sol, Lee Ji-ha, Moon Ye-won, Park Hee-von, Park Hyung-soo, Park Joo-hee, Kim Young-woont, Na-cheol, Cha Soon-bae, Yoo Ji-yeon, Lee Joo-seung, Han Jun-woo, Kang Han-sam, Bae Hae-sun, Lee Joo-sil, Jeong Woon-seon, Joo Jong-hyuk, Song Ji-woo, Lee Kyu-hyung |
| Original network: | tvN |
| Original release: | November 2021 |
| No. of episodes: | 12 |
| Running Time: | 70 minutes |
| Production Company(s): | Studio Dragon |
| Distributor: | tvN, TVING, iQIYI |
