While visiting San Francisco's Chinatown with Scott, Lassie is injured saving a child and taken to a vet's office. Diagnosed with possible amnesia, she later wanders off disoriented. Lost in the city, Lassie meets a struggling fisherman, a runaway teen, and others who need help. Meanwhile, as Scott continues his search for Lassie, so do health officials and police who think she is a rabid dog. © 1974 Universal Studios. All Rights Reserved.