"Kangchi, the Beginning" is a historical-fantasy Korean drama about Choi Kang-chi (Lee Seung-gi), a half-human, half-gumiho, who seeks the Gu Family Book to become fully human. Raised by the owner of the Hundred Years Inn, Kang-chi discovers his true nature and meets Dam Yeo-wool (Bae Suzy), a skilled martial artist who helps him control his powers. Their journey explores love, identity, and acceptance in a mythical Joseon-era setting.