The ride of Manjushri, a blue lion, was banished by his master to the human world to redress a wrongdoing by saving the humans before he could return to the divine world. At a fishing village, in the form of a young man, he met Lau Hung-mei whose brother Chung-ho went missing in the rough sea together with fellow villagers because an evil red dragon had caused severe storms. The lion stayed in the village to help. The dragon disguised as Chung-ho and accused the lion as the evil dragon. Hung-mei was badly hurt as she stopped the fake Chung-ho from killing the lion. The lion surrendered half of his divine soul to save her life. Although misunderstood by Hung-mei and villagers, the lion eventually found the missing Chung-ho and villagers in the Dragon’s den and subdued the dragon. Touched by the kind-hearted villagers, he decided not to return to the divine world but petrified as the Lion Rock to stay to protect the village.

In late Eastern Han Dynasty, Hon-yin was the only survived person of her family in an epidemic but was later slain by a thug. Her soul was controlled by Willow Demon who forced her to use money and beauty as bait to get the lives of passers-by. The Demon also sent Bat Evil to spread the epidemic. Seeking remedies for the epidemic, Doctor Cheung Kei came to City Yip. He refused Hon-yin’s lure in the temple and encouraged her to defy the Demon and flee. With help from Immortal Weasel, Cheung found the remedy. Eventually the Willow Demon, moved by the sincerity of the virtuous and courageous Cheung Kei, let go her hatred towards humans and released him. Although both Hon-yin and Cheung Kei could not bear to part, Hon-yin urged Cheung to realise his endeavour to cure mankind’s diseases. Back to the human world, Cheung kept in mind Hon-yin’s wish and vowed to be a good doctor. He wrote the Treatise on Miscellaneous Diseases to pass on his medical knowledge to later generations.