Won Mi Ho is the sole heiress of the Daehan Group, but her haughty and self-centered attitude conceals an underlying sadness. One day, she causes a major scandal that results in her father banishing her to Jeju Island, where she is tasked with teaching ethics at a high school. However, her exile turns sinister when she becomes embroiled in a supernatural case involving vengeful ghosts who seek to eradicate humanity. As the ghosts set their sights on her, this malevolent spirits target Won Mi Ho. During this chaos, a mysterious ghost hunter appears to protect her from harm. As she struggles to unravel the mystery behind the ghostly attacks, Won Mi Ho realizes that she must confront her inner demons to overcome this otherworldly threat. Can she overcome her selfish ways and work with her unlikely ally to save the world from the vengeful ghosts?