As London is submerged below floodwaters, a woman gives birth to her first child. Days later, she and her baby are forced to leave their home in search of safety. They head north through a newly dangerous country seeking refuge from place to place.

A tearaway teenage girl, at war with her mum, and trying to take control of her life, forms an amazing and unbreakable bond with a new friend. They raise hell, stick two fingers up at the world, and laugh like they never have before... but can Ellen avoid becoming just another statistic?