Following a suspected stroke, Betty finds herself condemned to live out the rest of her days in the least appealing possible way.
With, she feels, all her faculties in order, it's ludicrous that she should be expected to eat tea at five and be in bed by eight.
And sharing a room with a 92-year-old knitting fanatic is not her perfect relationship.
So she fights.
Care-worker Farai is charged with softening her up.
Slowly he begins to win Betty's confidence but just as he thinks he's getting there he finds Betty has other cards up her sleeve.
Ones that Farai is none too happy about.
When Farai discovers his application for asylum in Britain has been refused and he is to be returned to Zimbabwe, his survival depends on disentangling himself from Betty.