- Country: Hong Kong
- Genres: Drama
- Release: 2017-03-30
- Director: Chun Wong
- Writers: Chor Hang Chan
- Language: Cantonese
- Stars: Shawn Yue , Eric Tsang , Elaine Jin , Charmaine Fong , Yvan Hok-Man Chan , Jie Shui , Bryant Ji-Lok Mak , Alexander Chan , Peter Chan , Ng Siu-Hin
- Runtime: 101 min
- Awards: 23 wins & 28 nominations
- AKA: 一念无明 (China) , 一念無明 (Hong Kong) , Obłąkany świat (Poland) , Mad World (United States of America) , Mad World (United Kingdom) , Yat nim mou ming , 一念無明 (Taiwan) , Ta ga Tame no Hibi (Japan) , 誰がための日々 (Japan) , Mad World (Hong Kong) , Nhất Niệm Vô Minh (Vietnam) , Безумный мир (Russian Federation) , Mad World 一念无明
- Plot:
An absentee father and his bipolar son are forced to live together as they struggle with a recent family tragedy. The tension and anxiety boil as they live and try to cope in a tiny apartment. As time passes, they realize their shared pain is not their only source of grief, as they find the outside world is a cruel and unjust place.
- IMDB:tt6041030