Riuh tells the story of a group of residents in an alley in the corner of Jakarta who were given socialization to be aware of the virus. Although this pandemic has claimed many victims, there are still a number of parties who doubt the existence of this virus that spreads, one of which is through touch.
Waking up after giving birth, Mayang gets the news unlike what she expects from Reza, her husband: their first baby has died. Both of them are experiencing tremendous depression. Mayang can not accept it. Everyone at the hospital is sure that she is hallucinating. She contacts the police to look for a bright spot in this strange case. Dr. Vera who helped her give birth, provides evidence: the document of her baby's death with several photographs of the incident. Mayang who chooses not to give up begins to be considered crazy by some people in the hospital, including her own husband. Moreover, she feels to be followed by a spirit.
Lia is experiencing memory loss after an accident. When awakened, she is in a large, isolated house. It is a place of community consisting of people who do not have a home and relatives. They live in harmony and look after each other. They are the ones who help Lia when she was injured. Because she does not remember who she was and where to go, she stays there to get treatment. The days pass. Lia, who begins to recover, realizes there is something strange about the situation where she stays. It turns out that the inhabitants of the house consist of followers of cults and those who enter the house can never come out again.