It’ s 1986 and 29-year-old Marlo O’ Sullivan of London-Irish stock has just found out that his sister is his mother. To steady his life, he moves to Glengarriff, to a cottage he has inherited, in the stunning Beara Peninsula. When a neighbour dies unexpectedly, Marlo takes over his minibus service to Cork. There is nothing regular about the regulars on the bus - especially Sully, a non-verbal 6 year old, who goes nowhere but does the journey back and forth every day, on his own. Marlo is landed with this a strange but compassionate arrangement, fashioned to give the child’ s mother respite from his care. Sully’ s obsession with an imaginary friend in the ancient oak forests of Glengarriff slowly unveils its terrible secrets – a 400-hundred-year-old tragedy reveals itself.