Set in 1960s Dublin, a fatherless eight-year-old boy who feels alienated by his family, escapes his reality by deciding he's been sent from Mercury to study life on Earth. His fantasies mirror the life of his hero, Flash Gordon, from the serial he watches each week at the local cinema. His escapades result in dilemmas that drive his mother to such distraction that she turns to the boy's strange uncle for help.
Rita Tushingham
as May Cronin
Tom Courtenay
as Uncle Tony Cronin
Hugh O'Conor
as Paul
James Hickey
as Harry Cronin
Ian McElhinney
as Brother Dowdall
Kevin James
as James "Mucker" Maguire
Gerard Cannon
as Classroom Schoolboy
Johnny Ward
as Classroom Schoolboy
