After their father's untimely death, Nicholas and his two half-sisters are left to cope with not only a devastating loss, but also the realization that Nicholas is the one who must rise to the occasion and hold it all together.

A mom and dad who usually say no decide to say yes to their kids' wildest requests — with a few ground rules — on a whirlwind day of fun and adventure.

The female future members of Mystery Inc. investigate strange goings-on in their school.