A Korean horror film about an adopted young boy with a strange link to an old, dead acacia tree. As the boy settles in to his new home, the tree comes to life. When the family who adopted him becomes pregnant, he is to go back to the orphanage, and horror ensues.

Eunmi is preparing for the civil service exam at Noryangjin Academy, but her preparation does not seem to be smooth. Seemingly taciturn and somewhat daunting, she often opens her windpipe with light love and sex. Around that time, when she sees a man at a study group and develops a better relationship, strange rumors about him begin to circulate.