James is a 17-year-old who believes he is a psychopath. He kills animals as a hobby, but grows bored of the practice. He decides he wants to try killing a human. He settles on Alyssa, a mouthy, rebellious 17-year-old classmate with issues of her own. She proposes they run away together, hoping for an adventure away from her turbulent home-life, and James agrees with the intention of finding an opportunity to kill her. They embark on a road trip across England, and begin to develop a relationship after a series of mishaps.
Alyssa is teen angst personified. She feels estranged from her mother, hates her stepfather and rejects pretty much everyone she meets - until one day she sees James sitting alone.
Alyssa and James hit the road with a bang, but they soon realise how little they know each other
Alyssa and James decide to lie low, but their hideaway turns out not to be as safe as it first appears
In the fallout of their terrible act, real cracks begin to appear between James and Alyssa
James and Alyssa arrive at a rundown town. James is unable to block out a memory from his past.
Excited to be reunited, Alyssa and James get back on the road, where their outlaw status is put to the test
James and Alyssa make it to her father's place. But after the initial euphoria, cracks begin to show.