I Thought It Was Just a Natural Disaster Due to Heavy Rain, Until

In June, a strange and heavy rainstorm fell in Jiangcheng. The heroine Lin Wan and her sister Lin Xi, who has unusual hearing, were trapped in a residential building. The heavy rain had just arrived, and the community was cut off from water, electricity, and communications. The only door was sealed by inexplicable sand, and the entire building became an island. Sister Zhang, a resident on the first floor, and her family disappeared mysteriously after being trapped in the house. A strange water ghost appeared in the corridor, soaked in water and imitating human voices. Any resident who answered the door would be dragged away. A blank black death card appeared in the palm of his hand. The corresponding person's name would appear on the card, and anyone who saw it would die. Uncle Zhang, the community security guard, behaves abnormally. He secretly hoards a large number of black cards and secretly cooperates with monsters to hunt residents. There is a mysterious man in black hiding next door to the sisters. He is the only one who knows the rules of monsters and the secret of the rooftop sacrifice platform. Monsters have set iron rules for survival. Anyone who is alone or snoops on the rooftop will have their souls stolen. At night, a large number of water ghosts surround the building. Black cards are all over the sky marking the names of all the residents in the building. There are also giant strange eyes suspended in the clouds to monitor everyone. Lin Wan accidentally picked up an old photo of her grandfather who had been missing for ten years and discovered that the disaster was a sacrifice buried at the construction site for ten years. Uncle Zhang had been guarding the building for twenty years just waiting for sacrifices. Lin Xi, who was born with the ability to hear strange sounds, was the target of the monster. Everyone is forced to flee into the secret underground passage left by their grandfather in advance. The road ahead is full of unknown corpses and water monsters hidden in the wall. The battle of life and death has officially begun.