King Angelo once got bored. Being the king of hell is a tiresome for him. That's why he decided to play with people's dream. Play with them and lure them to hell. But in doing so, he met a girl. A girl who has a mission to save people from demon like Angelo himself. They keep on meeting in dreamland. Angelo always fail to lure people and drag them to hell because of that girl. It always get ruined. And he always get humiliated. That's why he decided to chase that girl. To find her. To get revenge. In the mortal world. And that's the story begin. A story to tell. A story that everyone should know. When the playful king of hell explore the world. Is it going to be worth it, or another game will be over after meeting that girl named Cassy.