One day in the dream, some one showed up and claimed there is a dream called paradise. From that day, dream demons that can suck human memory and spirit increased. In order to make everything return to its original state, Yoru, who awakened as a demon hunter, decided to challenge the initiator.
Due to family circumstances, Yuki has only one belief: money will make his little sister happy. And thus, he works part-time jobs late into the night. His plan is to start working full-time after graduation, but his little sister tells him that if he won't go to university, then she won't either.
The police have arrested dangerous criminals from the neighborhood and sent them to jail. During their time in jail, one of them was a witch who casted a spell to shrink many police officers to the size of an ant. The tinies now need to get a giantess police woman's attention before it's too late.
