One is enough. Two is too much. But what if not just one, or two entities possess your body but three? Since Relina Foster was a child, she could see unusual creatures, which is why her parents, particularly her grandfather, often warned her to be cautious since they would only bring her harm. But things abruptly changed when her mother died. One day as Relina was headed to the tomb, the demon wolf she frequently dreams of appeared to her. He took her to the Hidden Realm. The world where demons, deities, and fallen gods thrive. In exchange for her freedom, Relina agreed to become the bride of the demon wolf but she could only do so if she had to have sex with the two other demon beasts known across the entire Hidden Realm to complete the two seals necessary by the Book of Life and Death. In a world where only the strong succeed, will Relina choose to stand up just to survive? But what if the stance she took was the one that will ruin her entire being? Will she be able to escape from the clutches of the demon beasts or will she just let herself be consumed by the burning desire from within?

Nothing was more important to Georgia Valentines than having a happy and complete family, but the wonderful home she yearned for with Cross Piescraft, the person who adopted her, actually ended up behind iron bars, which she laments every day. Later, Georgia learns of Cross' true identity and the entrance leading to the Pentagon Realm in the other world. It wasn't until then that she understood why Cross was putting such restrictions on her. On her sixteenth birthday, Georgia was finally captured by Damian Volcann. He took her to the Pentagon Realm, where he thoroughly examined her. Damian aims to use her as the vessel of the child that will exterminate the werewolf's race and all of humanity, but a revelation from yesterday sever her bond with Cross not as a family but as two hearts who genuinely love one another. Will their fate be altered by pure love, or will the poison of yesterday consume their hearts until all that is left is intense grief and suffering?