The five sons of the Long family appear to be officials' sons who are well-read in poetry and literature, but in fact they all have an identity that is rarely known to the public.
Either he is the leader of the green forest, or he is an illusion master, or he is an undercover agent for the enemy country...
In short, these five brothers and sisters each have their own experiences. Our story begins with the youngest one, Long Biyao...