First off, the catchy title is simply a reference to guidance wearing a 3-button suit coat, sometimes the top button, always the middle button, never the bottom button. The main character is a tailor, he gives the advice to his teen grandson
Bill Nighy is Alan, Scrabble fan with two adult sons, and a teen grandson. One son, Michael, is missing, apparently he got up from a Scrabble game and left, they never heard from him again.
Several times the script references the Biblical prodigal son story, the one son who remained connected feels he isn't getting the love he deserves and all dad cares about is finding the missing son.
The story is a family relationship drama but sprinkled with humor. Bill Nighy makes it a worthwhile movie, all the other characters could have been played by almost anyone. However it was also good to see Jenny Agutter in a small role, she was mid-60s during filming, who could forget her performance in "Walkabout" when she was still a teenager?
I watched this on Amazon streaming movies.
