The prince at the East Palace travels incognito and gets poisoned due to eating inappropriate food. Since the doctors in the royal hospital have no idea how to cure the poisoning, the top medical official, Doctor Long, asks Long Chongjiu to treat the prince. Liu Feichun, an imperial guard is assigned to investigate the case of assassination of the prince.
| Actor | Role |
|---|---|
 Liu JingLiu Feichun | Liu Feichun |
| LLi YanTaizi | Taizi |
 Li GuangbinLong Chongjiu | Long Chongjiu |