The main characters, Roscoe, Simione and Dan-Dan, are 12 year old triplet brothers who live in rural New Zealand. A forest park and coastal waters are their playground, an environment that has taught them survival skills and tests them to their limits. The special bond between the brothers is an all important ingredient in their adventures. A mysterious person appears in all six stories, a figure who the boys doubt they even saw at all.
Story two, A Day at the Beach, is set on the coast. A sudden storm blows up, and as the three boys hurry towards safety, they spy two children with a small dog on the increasingly dangerous beach. Huge waves sweep the dog out to sea. The boy and girl will they be next?