The protagonist Yin Mo was originally a teenager adopted by his adoptive parents. He was born with Yin and Yang eyes but was regarded as mentally ill. After being expelled from the family, he unexpectedly awakened the ability to control ghosts out of the body and was bound to a [Head-lowering and Contract Trading System]. By completing the task of ghost wish_trigger, he can learn the ancient Onmyoji head-lowering technique, etc. So he began to wander between the human world and the spiritual world as a good-for-nothing yandere, pretending to be a pig and eating a tiger, while cultivating his own ghost army, and finally revealed a doomsday disaster caused by a falling head trigger, thus starting his road to revenge and redemption.
