This is a story that explores the awesome mystery of being. An enigmatic vessel of light arrives on Earth from the depths of space, revealing nothing of its occupants or purpose. It waits, a powerful symbol of humanity's weakness. Joseph Williams, a priest, devastated by the loss of a great love, confused by powerful mystical experiences and tormented by unanswered questions as to the meaning of his life, is pulled out of obscurity into a strange relationship with the vessel. Plunged into a great adventure, he is forced to go into hiding from worried governments. Help comes from an unlikely alliance of a Wiccan wise woman, a bishop and a mysterious Greek magician. Given sanctuary by an ancient esoteric sect, glimpses emerge of what might be happening. But it is only in his final, climactic encounter with the vessel of light that understanding comes.