When alien invaders attack Paradise Island, the Amazons at first repel them with the dazzling power of the Sun Sword, which has incredible power for one year. But the weapon peters out in the attack, the year’s charge being used up. Queen Hippolyta sends Wonder Woman to Forbidden Island, to wrest another Sun Sword from within one of the Trees of Vengeance. At first, Wonder Woman is surrounded by tree-wood herself when she grasps the handle of another Sun Sword stuck in one of the Vengeance Trees. But half of the alien invasion force has trailed her and inadvertently frees her from her wooden prison by attacking her with rays. Liberated, Wonder Woman defeats the aliens with the new Sun Sword, and, when she gets home, learns that Queen Hippolyta and the Amazons have been able to overcome the rest of the aliens’ depleted forces.