From the back of the book:
In Iron Ninja Burger Monkey, Ninja have the opportunity to advance both their personal and professional goals. Whether your Ninja is looking for a new, flashy weapon or the prestige of a promotion to Assistant International HR Directory -- Iron Ninja Burger Monkey has them covered. Brand new (old) weapons, new (ancient) equipment, new Wujenitsu, perks for completing deliveries, and more dishonorable disgraces than you can shake a monkey at. And if all that wasn't enough, Iron Ninja Burger Monkey makes coffee* and sends Ninja back in time to protect the Time-Space (TM) continuum.
Please Note: this product does not actually make coffee.