A magic bracelet sends orphan Summer Gale from the 21st century to a 1971 village, where she crosses paths with Officer Louis Lane. To survive, she pretends to have lost her memory, makes her way in the black market, cures Louis's mother, and takes on spies—while her feelings for Louis deepen. But with old secrets rising to the surface and threats closing in, Summer must uncover who she really is before everything slips away.