A strange world where special humans form a town - Plantland. A timid young man, Liv, and a lively girl, Tarl,are living stuck days in the upper levels of Plant City. Then one day, the two get caught up in the rampage of a lifeform that grows out of the city, called a Contaminated Tree,and fall to the lower levels of Plant City...!? A tale of everyday adventures woven by humans and trees, two different lifeforms!