Based on a Thai ghost story of Kuman Thong, the film revolves around a woman who has caused the death of her young brother a long time ago. When she returns to the old house where they lived before, she finds herself haunted by the spirit of her young brother wanting to take revenge for his death.

Five Chinese young people go for an outing, encountering a little girl blocking the road for help. To save the girl, they got into a chemical factory and got involved in a catastrophe of mutant rats attacking human beings.