Ok the story line wasn't the best and the side stories weren't great either but as Korean stories go I found it fun to watch and thought the young actors did a fine job. Being a retired grandmother stay safe at home during the pandemic I have become an Asian film/series addict. I have watched a total of 53 and have no plan to stop. Lee Jong-Suk has become one of my favorite actors and he didn't disappoint in this film. This is the first movie I have seen with Seo In-Guk but I found him entertaining and he did a good job with his emotional scenes. Also Kim Jae-young had a small role but I have seen him in several later shows and he has taken on some more serious roles and portrays them quite well. If you are looking for a easy, enjoyable show I would recommend No Breathing. Go ahead. Have some fun.