Written in Time

It is a drama that has three interrelated eras: the Modern era, the Sukhothai era, and the Rattanakosin era. Proceed through the story of a newly graduated doctor who comes across a mysterious old lady who gives her a novel-like book, and when she starts reading, she finds herself slipping into the world of books!! The doctor has been lost in two eras, and during her quest to return to her own world, she uses her studied medical studies to help the villagers adapt and be accepted, and she meets a man who seems to be reincarnated to wait.
(Source: Ginkgo at MDL)