Lin Xiaoman, a modern young man, accidentally traveled through time on Chinese Valentine's Day and became the cold-blooded killer Night Owl. However, he was stuck in the cleansing room due to a system failure and encountered the most embarrassing moment in his life.
Forced to accept the identity of a eunuch and enter the East Factory, he started a hilarious master-disciple routine with the irritable governor Cao Dehai, and discovered that there were shocking secrets related to him hidden in the palace.
