The critically acclaimed robot sci fi series reaches new heights with the fourth installment by award-nominated author Cameron Coral... A post-apocalyptic Manhattan. A medical researcher hides a secret that could transform humanity. Block's search for Wally leads him to Mach X's impenetrable skyscraper in New York City. Outside the gates, a military battalion of SoldierBots guards an encampment of trapped human survivors in this action-packed science fiction adventure. Infiltrating the Enemy Stronghold Block embarks on a bold mission to infiltrate the tower in a bid for Wally's freedom, a mission for which the cost may prove too high to bear. Will Block succeed in his desperate attempt, or will he be crushed by the combined might of Mach X's forces in this thought-provoking work of speculative fiction? A Heartwarming Science Fiction Epic Steel Siege continues the heartwarming science fiction tale of unlikely friendship and robot redemption that has captivated readers throughout the series. With higher stakes and more dangerous challenges, Block's unwavering dedication to his found family will tug at your heartstrings as he navigates the perils of a world where the line between man and machine has never been more blurred. If you enjoy character-driven science fiction with heart-pounding action and emotional depth, then you'll love the fourth book of this post-apocalyptic sci-fi series and its robot protagonist. Embark on an unforgettable science fiction journey with Steel Siege, the thrilling sequel to the award-finalist Steel Guardian, Steel Defender, and Steel Protector. Steel Siege is the fourth novel in the Rusted Wasteland complete series about a robot protecting found family amid a human vs. robot war. For fans of Isaac Asimov, Martha Wells, JN Chaney, and Becky Chambers, this is a hope punk sci fi book that is heartwarming and full of futuristic action.