Saein is an omega with a single mission in life: to rescue his mother from the clutches of Geunhan Pharmaceuticals. In order to achieve this, he becomes the bonder of Yungeom, a wealthy alpha who needs an omega to stabilize his pheromones. It seems like there's hope for Saein and his mother as he grows closer with Yungeom, but what Saein doesn't know is that there is a frightening, ugly truth lying under the kind facades of the people who are his new family...