The wish-granting diary Autumn Falls' father left her stops working and high school junior Autumn must figure out her love life on her own until she is given a map that will take her wherever she wants to go, but rather than being a fun opportunity, it leads to life-changing consequences.

Samurai Seikei and Judge Ooka, his foster-father, seek seven men who have seven maps on their backs in order to locate a cache of dangerous weapons before they fall into the wrong hands.