InterWorld

After mastering the ability to walk between dimensions, Joey Harker and his fellow InterWorld freedom fighters are now on a mission to maintain peace between the rival powers of magic and science who seek to control all worlds. When a stranger named Acacia somehow follows Joey back to InterWorld's base, things get complicated. No one knows who she is or where she's from - or how she knows so much about InterWorld.

Joey Harker never wanted to be a leader. But he's the one everyone is looking to now that FrostNight looms, and he'll have to step up if he has any hope of saving InterWorld, the Multiverse, and everything in between.