Cassie Grant, a young girl from the United States, is hit by a car while wandering through England. She suffers from partial memory loss after the accident and finds herself at the mercy of Mrs. Kirkman, who invites her to stay in her rural home until she recovers. As Cassie delves into Michael's research on an old church discovered in Glastonbury, strange premonitions and visions begin to surface, hinting at a deeper connection between her and this British community.