Ben Braver and the vortex of doom

"Ben Braver has one day to save the world. The students of Kepler Academy are under threat . . . again. And, this time, so is the rest of the world. Ben Braver might just be humanity's only hope. Ben will have to overcome all kinds of enemies, including a reckless time-traveler, the Abandoned Children and The Reaper. But not everyone is who they seem - and when Ben finally gets his superpower, will he learn to use it in time to save everyone from total destruction?"--OCLC.