Grab a hard hat and join fifth-grade friends Tori, Angie and Kelly as they attempt to outwit a rival group of boys who have taken over their clubhouse. Encouraged by the female head of a major construction company, they accept the challenge to build their own. But stormy weather, differences of opinion and the boys' attempts to undermine their efforts test their friendship. Follow the antics of these spirited girls as they get a first-hand look at a real construction company and learn there is a lot more to building than just hammers and nails.