Tom and Jess have grown disillusioned with a world full of people who'll murder you as soon look at you - or else systematically overcharge you for building work. They are going to make life simple from now on: just the two of them rescuing starfish washed up by the tides and strictly no messy contact with other human beings. But this secluded lifestyle is disrupted when mysterious stranger slippy arrives on their doorstep, wounded, dying, and begging them for help. The couple struggle to continue their misanthropic existence as Slippy fights for survival - but can life be the same after his arrival?