Food shortages. Crisis at the border. Even the risk of rioting across the UK.
The Government has released its assessment of what could happen if the UK leaves the EU without a Deal - and it makes for startling reading.
The six pages of Operation Yellowhammer warn that in the worst case scenario, there could be long delays at Channel crossings, significant electricity price rises and impacts on medicine and food supplies.
Sky's deputy political editor Sam Coates reports.