It felt like this production came together quick and hopefully it portends a quality product with how quickly the leads signed up. Today the production team of tvN drama Happiness confirmed the leads are for sure Han Hyo Joo, Park Hyung Sik, and Jo Woo Jin, with the script by the screenwriter of Watcher, The Good Wife, and Spy, with the PD of Record of Youth, Memories of Alhambra, the first season of Secret Forest, and Mrs. Cop. The drama is set in the near future as people become more and more isolated, and a battle for survival erupts in a residential building. People from different backgrounds are locked inside a building after an infection disease spreads and a battle of the minds and physical strength ensues. The leads are both police officers and the second male lead is a mysterious figure who is secretly investigating the origin of the disease. The drama is slated to start production this month in May for a later in 2021 premiere.