The year is 20XX in Tokyo. A series of suspicious disappearances of children are taking place.
The news of children’s disappearances was spreading through the city at night, and police officers were on the lookout for more and more children.
Detective Shiohara and his junior detective Yuzu are assigned to investigate the case.
At the same time, a woman from a candy maker came to an orphanage to donate pudding to the children.
Matri Ulla (12 years old), a boy who grew up in the orphanage, happily eats the pudding with his friends, but something terrible happens to the children.
Behind the scenes, a suspicious man is plotting a plan… And what is the connection to the serial disappearance of children?
Detective Shiohara and his team witness a mysterious incident.
Ulla’s destiny intersects with the unexpected power she has gained.