When Nova Corps member Richard Rider returns from a hard-fought war to a Xandar that's been ravaged, it's seemingly up to him to find out the fate of his fellow comrades. Meanwhile, high-schooler Sam Alexander discovers a cosmic black helmet that turns out to be a Nova Corps helmet that his missing father owned. With this, he's propelled into Rider's search as the two end up realizing a much deeper conspiracy that threatens to tear apart everything that Xandar stands for...
