The Trial of Chaos - The Magical Intervention Agency, #4

Daniel Hammer's adventure takes a shocking twist as he delves straight out of one chaotic mess right into another, this time forced to contend with the people he's fought alongside for years. After their victory over the Cralyx King and their return home, Daniel and the team are apprehended for the laws they've broken and they have their powers disabled. While a tribunal is called to decide their fates, Earth is attacked by a powerful new foe, a foe far more powerful than the Son of Chaos himself.
And for the first time in his life, his power will not be enough to win.