Twelve-year- old Dotty Morgan wants nothing more than to have a top-notch supernatural sleuthing agency. Wealthy businessman Mr. Sato offers her enough money to make her dreams come true. He just wants access to the sword and cup Dotty's father recently acquired. But her new friend Sakura claims the items are hers, and her life might depend on getting them back. When zombie ninjas try to steal the items from her home one night, Dotty finds herself caught up in the middle of a war between paranormal factions. To make matters worse, Dotty's girlfriend Hannah is jealous of her relationship with Sakura, bullies try to steal her new bike, and her mother invites the worse person in the world to live with them.