In a residential street in Edinburgh, brothers Max and Jake run down an old man while Jake is driving them back from a wedding - stoned and uninsured. They carry on with their lives, hoping Walter's death will be passed off as natural causes, but the brothers end up being pulled further into Walter's world.
Max does his best to take control, while Jake finds himself falling in love with Angie, the dead man's niece.
Jake and Angie's blossoming relationship creates difficulties between the brothers, leading Max to take decisive action against his sibling.
When brothers Max and Jake unwittingly run over and kill an old man, their attempts to cover it up trigger consequences neither of them could ever have imagined.