Ordinary salaryman Takumi works a grueling job, but he can get through it because he has Leo, his beloved puppy-sized Maltese, waiting for him at home. One day, Takumi wakes up in a fantasy world... and right in front of him is an enormous wolf! Wait, could this gigantic creature actually be the once-little Leo?! With the help of a mysterious new magic skill, Takumi will do his best in this world to make a better (and more relaxed) life for himself and his furry best friend!