and safe. Single mum Sandra is prepping for the huge media event, and she's ready for a driverless future. Widowed after her husband fell asleep at the wheel, she's relieved that her kids may never need to drive themselves. But as the day gets underway, disaster strikes. A journalist vanishes, possibly murdered. And before long, it's clear something is very wrong. The cars are no longer taking orders from their passengers. They're starting to organise. They're starting to hunt. And they've got the residents of Garret Island in their sights ...