As Equestria and Earth merge, leaving the planet uninhabitable to the non-converted, the last human is determined to remain just that to the bitter end. But why?
Spike is no longer the chubby baby dragon he was, and he no longer has to go through his hundred-year wyrm sleep. But as he and Twilight move back to Canterlot, Spike finds that his new larger body means the end of his old life.