Lassie
The Road Back (1) (16x14)
:
Scott and Lassie, in San Francisco's Chinatown for a mini-forest project, befriend the children in a Chinese school. Lassie is struck by a car while saving one of the children and appears to have amnesia. So when a fire strikes the vet's office she's staying at, she escapes to the streets with no idea where she belongs.