In the race to create the Undefeatable Minion, Dr. Critchlore's long-time rival, Dr. Pravus, is in the lead.
As Dr. Critchlore rallies his troops to respond to that threat, Runt is kidnapped and whisked away from the school. As the last prince of Andirat, it's time for him to lead the rebellion in his home country.
Runt knows that millions are suffering in Andirat, but he can't help but feel like he's abandoning the only family he's ever known. Isolated from his minion friends, Runt grows increasingly suspicious of the rebels, who won't let him talk to anyone at Critchlore's school, and, even worse, seem to be working with Dr. Pravus.
Runt knows he has to escape and tell Dr. Critchlore, but reaching him activates Runt's tether curse for the third time, which, he finds out, will now kill him in a few days! His only chance for survival: stop Dr. Pravus and win the allegiance of the witch who cursed him.
Fortunately for Runt, he knows just the minions for the job.