The Lost Temple is a suspenseful romance drama that follows Xiao Min, a young woman from Taiwan who travels to Chongqing in search of a hidden treasure left behind by her grandfather. Teaming up with Pan Tianqian, a local youth, the two embark on an adventurous treasure hunt filled with mystery and discovery.

As they uncover the truth behind the treasure, Xiao Min realizes its deeper meaning and decides to return to Taiwan to honor her grandfather's memory. Along the way, Pan Tianqian develops feelings for Xiao Min, adding a tender touch to their thrilling journey.