Everyone creates their own rules for living. But what happens when an extended family gathers for a traditional Christmas dinner and each of them rigidly follows those rules?

As the drinks flow and the obligatory games intensify, family resentments rise and relationships are pulled apart with a bang. Accusations fly, relationships deconstruct, the rules take over. Christmas Day will never be the same again.

In Sam Holcroft's theatrically playful, dark comedy the instructions are there for all to see, audience included - so there's really no place to hide.