When matter becomes imbalanced and transforms, it produces Flow. Flow can result in peculiarities both significant and insignificant, and it is the responsibility of both individual contractors and Flow Disposal departments to return it to its natural state. Chima Kondo, a woman who looks like a 12-year-old due to Flow's effects, has to understand the workings of Flow and its successful dispersal because of this. Upon joining Hirota Flow Inc.'s contractors Hirota and Shacho, she uncovers that Flow is far more complex than she had previously comprehended and that there is much more to discover.