Damian and Howard are teaming up to face an all-new mastermind villain who is ready to demolish their favorite soccer spot! Summer is in session* and that means all the neighborhood patrols* soccer games* and snacks the boys can handle. But things take an unexpected turn when a new group of heroes* known as the Hero Club* approach Damian and Howard with an unusual offer--an invitation to help unmask the corporation planning to build a recycling factory in their favorite park. Together* they hope to recruit the help of Metropolis's favorite reporter. If that weren't enough* Batman has been acting strangely and disappearing for stretches of time. And there are ninja everywhere... What could possibly be going on? Get ready for this laugh-out-loud sequel from beloved New York Times bestselling author-illustrator Jeffrey Brown.