Karaket (การะเกด), a daughter of the ruler of the northern city of Phitsanulok, lives in Ayutthaya, the capital of the Ayutthaya Kingdom, during the reign of King Narai (1656–1688). She lives in the residence of King Narai's chief astrologer, who holds the noble title of Chaophraya Horathibodi (เจ้าพระยาโหราธิบดี) and is the father of her fiancé, Det (เดช), a foreign ministry official holding the noble title of Muen Sunthon Thewa (หมื่นสุนทรเทวา).