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, then carry on with their lives hoping the victim's death will be passed off as natural causes.

Max tries to derail the private detective he engaged to assuage Walter's niece Angie's fears; Max deals with threats from Walter's neighbor Sheila, who reveals that she witnessed something that night.

Angie and Jake's burgeoning but complex relationship hits a bump because he has suspicions that she tries to explain away.

With facts surrounding Walter's death in question, Max risks it all; Jake and Angie take a gamble; Claire cuts her losses.