When a passenger realises that someone is attempting to hack his train, he makes a desperate call for help. But can two total strangers work together to get everyone off in time?

Whilst a desperate Joe considers going to extreme lengths to leave the sleeper, an under-fire Abby starts to realise that she has as many obstacles in her path as the train does.

Realising that someone onboard may be working with the hackers, Joe turns his attention to his fellow passengers, whilst Abby stuns her colleagues by taking the train off the mainline.