Mama is a horror story about two sisters Victoria and Lilly missing. In 5 years, his uncle Lucas and his girlfriend Annabel managed to find two granddaughters. One day, two children were found and they still survived magically in a wooden house. When bringing Victoria and Lilly back to home to help them integrate with normal life, Annabel recognized the existence of ghost in the house. Every night, two kids were having fun with a mysterious character named Mama.