The demons invaded and the humans were defeated.
The male protagonist Ichiya and his childhood friend Taozi
became prisoners and were escorted to the devil’s lair
where humans were used by demons as laborers, experimental tools
and even food. With his witty mind, Yi Ye dealt with the four major demon masters
and got the protection of the demon queen Monqier
but on the condition that he must fall in love with the demon queen and date her? ? ?