She had only left to do a bit of shopping for her mother. They just needed a few things for dinner, in 1953. But somehow...She stepped through a rift in time and fell unconscious, when she woke-50 years had passed. Where does she go now? She has no family, no home and little money. Can she find someone to care for her and at what cost?
I did see this as playing out with elements of non-con and extortion. Perhaps even a master/slave vibe.