The orphan Gu Lan carries the burden of her parents’ wrongful deaths and journeys alone through the martial world, relying on her mastery of medicine and poison. She meets a gentle young master of the White Tiger clan, takes in a fox merchant who is sly on the outside but simplehearted within, travels with her cold and secretly passionate senior brother, and saves a proud, tsundere young man who takes the form of a rabbit. Their fates were intertwined long ago. She plans every step carefully, overturns the corruption at court, avenges her blood feud, and eventually retreats from the world with the four of them, spending the rest of their lives in peace.