A group of friends at a Jerusalem retirement home build a machine for self-euthanasia in order to help their terminally ill friend. When rumors of the machine begin to spread, more and more people ask for their help, and the friends are faced with an emotional dilemma

Four overweight friends from the Israeli city of Ramle are fed up of dieting and the dieting club they belong to. When Herzl (155 kilos), the main protagonist, loses his job as a cook and starts working as a dishwasher in a Japanese restaurant in Ramle he discovers the world of Sumo where large people such as himself are honored and appreciated. Through Kitano (60 kilos), the restaurant owner, a former Sumo coach in Japan (who is supposedly hiding from the Yakuza in Israel), he falls in love with a sport involving "two fatsos in diapers and girly hairdos". Herzl wants Kitano to be their coach but Kitano is reluctant - they first have to earn their spurs. "A MATTER OF SIZE" is a comedy about a ‘coming out’ of a different kind - overweight people learning to accept themselves.