The date is September the 25th, 1983 -- the Troubles are ongoing. Thirty-eight members of the Provisional Irish Republican Army (IRA) are being held captive in HM Prison Maze, an impenetrable, escape-proof jail. The odds are against them. The Maze is fortified with 15-foot fences, 18-foot concrete walls, barbed wire and steel gates. Months of planning have lead up to this moment; the moment when these daring men, assisted by some guards, break free...

Nan hits the big screen as she goes on a wild road trip from London to Ireland with her grandson Jamie to make amends with her estranged sister Nell.