Trespasses is a post-apocalyptic story in which the survivors of a calamitous event called The Havoc have sought refuge underground. Of the three races originally inhabiting the planet – humans, halflings and the legendary Álmos – only the two first have survived, though not in multitude.

In the halfling community Talus an archivist's apprentice called Pele has his world derailed when a personal tragedy transports him thousands of years into the future and above ground. In the grey and arctic future and surrounded only by humans and ice, Pele tries to make sense of his strange fate and in doing so stumbles upon an even bigger mystery – one that threatens the whole of time and space.