The League of Seven is the first book in an action-packed, steampunk series by the acclaimed author of Samurai Shortstop, Alan Gratz.??In an alternate 1875 America electricity is forbidden, Native Americans and Yankees are united, and eldritch evil lurks in the shadows. Young Archie Dent knows there really are monsters in the world. His parents are members of the Septemberist Society, whose job it is to protect humanity from hideous giants called the Mangleborn. Trapped in underground prisons for a thousand years, the giant monsters have been all but forgotten--but now they are rising again as the steam-driven America of 1875 rediscovers electricity, the lifeblood of the Mangleborn. When his parents and the rest of the Septemberists are brainwashed by one of the evil creatures, Archie must assemble a team of seven young heroes to save the world.

Having discovered the monstrous secret of his origins, Archie Dent is no longer certain that he is worthy to be a member of the League of Seven. But with new enemies to face, he realizes that he may not have the luxury of questioning his destiny.??Wielding the Dragon Lantern, the maniacal Philomena Moffett has turned her back on the Septemberist Society, creating her own Shadow League and unleashing a monster army on the American continent. Archie and his friends must race to find the last two members of their league in time to thwart Moffett's plan and rescue humanity once more.

Archie Dent is convinced that he and his friends Hachi and Fergus are the first three members of a new League of Seven: a group of heroes who come together to fight the Mangleborn whenever the monsters arise to destroy humanity. His belief is put to the test when they are forced to undertake separate missions. Archie and his faithful Tik-Tok servant, Mr. Rivets, pursue a shapeshifting girl who has stolen the Dragon Lantern, an ancient artifact with mysterious powers.