WANGI tells the story of Nor (Erra Fazira) who has just returned home after giving birth to her second child. She and her husband, Khuzairi (Sharnaaz Ahmad) have a special seven-year-old son. Throughout her confinement period, Nor has been cared for by her mother. Meanwhile, Nor also realizes the absence of their housemaid and her foster sister, Bella (Nabila Huda). Khuzairi informs her that Bella has quit and returned to Amsterdam with the reason that she got married to her lover, namely.... (Syazwan Zulkifli). However, Nor finds it strange since Bella never mentioned anything about a wedding and thus begins the mystery of Bella's disappearance and the strange occurrences that happen to her and her family.