Rachel takes the same commuter train every morning. Every day she rattles down the track, flashes past a stretch of cozy suburban homes, and stops at the signal that allows her to daily watch the same couple breakfasting on their deck. She's even started to feel like she knows them. "Jess and Jason," she calls them. Their life -- as she sees it -- is perfect. Not unlike the life she recently lost. And then she sees something shocking. It's only a...

A small group of commuters and tube workers witness a fiery apocalypse overtaking London. They make their escape through a service tunnel. Reaching a door they step through ... and find themselves on a wild shore backed by cliffs and rolling grassland. The way back is blocked. Making their way inland they meet a man dressed in a wolf's cloak and with wolves by his side. He speaks English and has heard of a place called London - other people have arrived...

"¿Estabas en el tren de las 8.04? ¿Viste algo sospechoso? Rachel, sí. Rachel toma siempre el tren de las 8.04 h. Cada mañana lo mismo: el mismo paisaje, las mismas casas... y la misma parada en la señal roja. Son solo unos segundos, pero le permiten observar a una pareja desayunando tranquilamente en su terraza. Siente que los conoce y se inventa unos nombres para ellos: Jess y Jason. Su vida es perfecta, no como la suya. Pero un día ve algo....