Nakhun, a twenty-year-old student who doesn’t believe in the supernatural, unexpectedly finds himself sent back nearly four hundred years to the Ayutthaya Kingdom.

There, he is mistaken for a missing person and ends up taking on the identity of Klao. While trying to find a way back to his own time, Nakhun also begins to investigate the mystery behind Klao’s disappearance.

However, Klao’s close friend Phop quickly senses that something is wrong. Doubting that Nakhun is truly the person he claims to be, Phop keeps a close watch on him.