In "Nova" young Sam Alexander discovers that his father, Jesse Alexander, was once a legendary member of the Nova Corps, an intergalactic peacekeeping force. After Jesse's mysterious disappearance, Sam inherits his father's helmet and discovers that he has been chosen to wield the power of the Nova Force. As Sam grapples with his newfound abilities, Earth comes under threat from an invasion led by the ruthless warlord Titus and his forces. With the help of Richard Rider, a seasoned Nova Corps member, Sam must harness his powers and become the hero that Earth needs to repel the invaders and save his planet. But as Sam delves deeper into the mysteries of the Nova Corps and his father's legacy, he uncovers dark secrets that threaten to tear apart the fabric of reality itself. With the fate of the universe hanging in the balance, Sam must confront his own doubts and fears and embrace his destiny as Nova, the cosmic hero.