The Resisters #3: Titan Base

Million-copy bestselling Halo author and game developer Eric Nylund brings action-packed science fiction to a young audience with the third book in the Resisters series.  

Despite their recent victory over the alien Ch'zar, Ethan Blackwood and his squadron have no time to rest. The Ch'zar are still relentlessly searching for the Seed Bank, the Resisters' secret base?and they're getting dangerously close. If they find it, all the adults in the Seed Bank will be absorbed into the the aliens' collective mind. Now Ethan and his friends must evade all Ch'zar scouts and find a new home for the Resistance. Once again, it's all up to the kids.