Under the Blue Comet (Comet Kid Chronicles #1) by Tom Hoffman

Born under a mysterious blue comet, Max Underwood’s life is upended on his eleventh birthday when he gains two remarkable powers and discovers his parents are much more than they seem to be. Kidnapped by an escaping alien, Max and his older sister Grace are dragged from the sleepy farmlands of Kansas through an alien wormhole into a desolate post-apocalyptic world controlled by a living android known as the Crystal Father. As Max and Grace struggle to survive the harsh environment, primitive aliens, marauding bandits, and terrifying otherworldly creatures, they begin to uncover the secrets of Max’s blue comet, along the way recruiting a shy and enigmatic Comet Kid named Sophie and a quirky robot named Zeus to help them battle the dark forces that are preparing to invade Earth.

Category: Science Fiction – Alien Invasion