Triads, Yardies and Onion Bhajees: Once Upon A Time In Southall is based on the novel The Stone Shiva by Manish Patel. The movie centres on the Holy Smokes crime syndicate and the real-life $6 million Heathrow Airport robbery.
On a secluded family farm, a mother suffers a psychotic break due to postpartum depression, forcing the eldest son to protect his sibling from the mother they have always known and loved.
A home invasion robbery ends in tragedy when a member of the wealthy Tyrell family is killed. Their live-in nanny, Claudia, begins to secretly suspect that her troubled brother may be the murderer.