When a Japanese restaurant is extorted by the London Mafia, a father takes matters into his own hands to protect his family and their business.

Late September takes place over a 24-hour period, in a beautiful Kent house and garden, and follows the course and aftermath of a birthday celebration organised by a middle-aged woman for her husband to whom she has been married for nearly 40 years. As the day and night progress, old rifts, new relationships and secrets emerge amongst friends, and the underlying tensions in the marriage can no longer be contained.

The tragic true story of Jean Charles de Menezes, the innocent Brazilian shot dead by British police in 2005 at the height of the London terrorist alerts.