Set during the 19th century, Tribes of Norland (The lost summer) is a gripping adventure. In a land of gods, warriors, and dark forces, The evil Gingo tribe has joined forces with the Zastics, and with the help of a mind controlling yellow powder crumbled from stones embedded in the walls of caves, the two seek to return to the old days, when they ruled over the lowlands from the top of the mountain. But to open the sealed cave that holds these powerful stones, the Gingo need a secret code imprinted on Marcus' grandfather's arm since birth. Accompanied by Oulu, a teenage girl, and a Senja warrior, Marcus sets out on a mission to rescue his grandparents from the tribesmen. The trio journeys through the forests, across the lowlands, through the pass, to the top of the Norland Mountains, where the Gingo and the Zastics are preparing to hatch their plan for domination. Will Marcus and his comrades succeed in halting them and freeing his grandparents from their evil clutches?