Dr. Jeff Taylor has moved to a small city an hour north of San Francisco. He works at a rural community health care clinic and is in a romantic relationship with the clinic's founder, Inez Vasquez. Inez has a young daughter, Bianca. Jeff takes her on Saturday adventures to give Inez a break. During an outing at a vast nature preserve, Bianca disappears. When she reappears, Bianca announces she got lost but was guided back by someone she nicknames Teacher Lady. Teacher Lady turns out to be a young homeless woman, Edwina Seeba. Jeff tries to help her. Edwina claims a friendship with legendary horticulturist Luther Burbank, who died in 1926. Is Edwina simply crazy, or a heavenly creature come back to earth?