In Sterling Squadron, Ethan Blackwood is still shocked to find out the the Earth has been taken over by mind control aliens called the Ch'zar who can only control the minds of adults. Ethan and his friends go on a mission go on a mission to recruit kids for their cause which is to fight the Ch'zar with their own technology. The Ch'zar and the Resisters use huge bug/planes to attack. When you are in your bug, their mind attaches with yours and only children can control that. This book is a battle to the finish!