It is June 24, 1948--the Feast of St. John the Baptist, the Bringer of Light, is being commemorated with bonfires ignited on the headlands. Father MacMurrough, newly arrived and desperately lonely, reflects on a failed love affair. Michael Barron, a young mute, falls in love and is puzzled by the way that his life--like the tremendous iceberg he and his friends explore--is turning into a dangerous business. His pious younger brother, Kevin, is terrorized by whispering monsters and imagined sins. Mary, an adolescent dreamer, invokes the pagan superstitions of Midsummer's Day in the hopes of divining her future husband. On a rooftop overlooking the sea, a woman rocks her baby as she waits for her fisherman husband to return home. Meanwhile, Old Johnny, the drunken lighthouse keeper, staggers through the day, haunted by the phantoms of his past. Behind everyone looms the founding father of the village, an Irish castaway, the son of a monk, dead five hundred years. Even in the middle of the twentieth century, something of his spirit survives within every soul in the community.