Summer Grant is pushed off Mount Tai, time-traveling to 1970s Northeast China. Suspected as an Enemy Spy, Aiden Lucas monitors her, taking her home. Summer activates a Spatial Magic Treasure. With her Golden Finger, she cures Mrs. Lucas, helps the army find munitions, and performs heroic anti-spy deeds. She discovers her true identity, then joins Aiden Lucas to combat a smuggling group and spy network.