Alien Storm

With their powers growing, and the threats against them also on the increase, Sarah and Robert and their gang of superhero friends are still on the run from HIDRA, an international military-scientific task force. Once again the siblings are called upon to save the world. Can they out-smart evil Russian billionaire Nikolai Makarov and prevent a deadly meteorite shower?
"A brilliantly stunning sci-fi from beginning to end... A definite must-read!" - Teen Titles