No Way Home

When Zach ends up in the middle of who-knows-where with no memory expect his name with a bunch of other boys whose memories have also been wiped, you can't blame him for being suspicious, and when the leaders of the people who brought them start giving them lessons to fight, he starts to wonder if this is all really for something else, and when his memory starts coming back and starts to figure out even more things, it gets even stranger...