SECRET MISSIONS. SPIN KICKS. SINISTER GHOSTS.
Thirteen year-old Agent Darcy is one of the top students at the Bureau of Sneakery, where there are three rules every agent must follow: never make friends with an outsider, never speak of the Bureau, and never reveal your real name. Lately, Darcy has hit a rough patch: her rival, Agent Serena, keeps outdoing her. If things keep going this way, Darcy is convinced that no one will ever assign her a real mission.
Ninja Steve's city, Ninjastoria, is the home of sword fights, throwing stars, and Tae Kwon Donuts. Unlike his genius older sister,...

Since returning from her mission in Ninjastoria, Agent Darcy can't think straight. Her hacking lessons with Agent Evelyn are boring, her classes seem pointless, and her curse can't be cured.

Ninja Steve has come home to find that his parents have been captured. His sister, Nora, has a rescue plan, but it requires a treacherous journey beyond the borders of Ninjastoria.

When the mecha-moles launch an attack on the Bureau of Sneakery, Darcy finds herself on a perilous mission to save her comrades. Meanwhile, a familiar man in a gray mask arrives in Ninjastoria, carrying a...