

In his past life, Harrison Cowan abandoned his own daughter for a widow, raising her two sons instead. In his old age, when he fell ill, his adopted sons refused to even pay a mere hundred thousand for his surgery. Given a second chance at life, Harrison is determined to make amends. No longer willing to play the role of a stepfather, he vows to work hard, make money, and devote his life to raising his biological daughter, living only for her from now on!

When the apocalypse hit, Alan Clifford sacrificed his lifespan to shelter humanity in an underground bunker for 30 years. But after peace seems near, he is betrayed by his adopted daughter Cindy Clifford and Chelsea Mason, who forge fake surface footage, incite the masses, and send him to the gallows. Believing their lies, humanity destroys the bunker and rushes upward—only to fall into a trap set by giants. As slaughter begins, Alan, now a master of mecha tech, must decide whether to save them again.