The heroes receive dire news: prior to their original capture, Core Hunter, Voltix, XT4, and Thornaxx stole four components of what is said to be a devastating super-weapon called "The Doom Box." This device grows larger on activation, encompassing anything in its path, then collapses in on itself--a serious danger enough--but the box is capable of growing to the size of an entire galaxy! Now that the villains have escaped, they are believed to be...

On the run, Speeda Demon realizes that the only way to keep Hero Factory from getting him is to get them first. From every corner of the galaxy, he assembles an army of criminals. Their mission: wipe Hero Factory right off the map. Outnumbered and outpowered, the heroes Furno, Nex, Stringer, Bulk, Breez, and Stormer XL must come up with a way to win--or else see the galaxy become an empire of crime.

On the Valiant's maiden voyage in space, it encounters a swarm of brains drifting quietly among the stars. Little does the crew know thse strange creatures have the ability to control the minds of anyone they touch. The ship is quickly taken over by the hostile life-forms, and the Valiant begins rocketing through space on a collision course with one target: the Hero Factory in Makuhero City.

The Masters of Spinjitzu, Jay, Cole, Zane, and Kai, must decide whether a shadowy figure, the Phantom Ninja, is friend or foe.

Discusses the 1920s, including prohibition, fashion, music, and the stock market crash.

Cole, a member of Sensei Wu's team of ninja warriors, must keep his fellow ninjas' egos in check as he strives to unite the warriors and lead them on their dangerous missions.