Bestselling author Gregory Mone brings Mattel's He-Man and the Masters of the Universe together for a brand-new adventure in the first book of this original middle-grade series based on the hit Netflix show! A toxic gas spreads across Eternia, ravaging farmlands and endangering citizens. The planet's only hope lies with Adam, a lost prince with cosmic abilities. When he wields the mystical Sword of Power, he transforms from a scrawny teen into He-Man, the most powerful man in the universe. With his friends Teela, Cringer, Duncan, and Krass by his side, Adam embarks on a dangerous journey, facing pirates, dragons, and perils at every turn in search of Moss Man, a legendary figure who might hold the key to stopping the devastating stench. Yet the sinister Skeletor and his Dark Masters will stop at nothing to thwart the unlikely heroes!