David Henderson's parents were splitting up, and David was off to stay for a few weeks with his favorite grandfather in the city while his mom and dad sorted out a few things. David was not happy with this abrupt change in his life, but had decided there was nothing to do but go with it. He loved visiting his grandfather, and figured he would at least spend the two-week visit having some fun. But soon a small mystery cropped up, followed by a meeting with someone new and special. And in almost no time, David's world was to change forever.