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 three, The Top-dresser: A Cessna top-dressing plane comes down in an area in the bush with which the boys are unfamiliar. They track the path of the plane by following the fertiliser trail. The smell of aviation fuel becomes their only lead when the trail stops.