It's 1969 and the nuns of St Joseph's Catholic School are clattering their rosaries in alarm. The new Archbishop is coming to visit and the school is in an uproar. Owen Finnegan is sure the big event will not go well for him. These things seldom do, so with the help of his best friend he cooks up a scheme he is certain will get him the day off school. Unfortunately old Mrs Simpson, the town gossip, throws a spanner in the works and Owen's grand plan spirals out of control.