Source: AniDB.net/Wikipedia.org
Element Hunters is an anime series that started airing in Japan on the 4th of July. The anime is a science-fiction adventure aimed at children to teach chemical elements. The project is a joint production between Japan and Korea for both television and merchandising. Element Hunter's plot focuses on three children, the Earth Team, traveling to an alternate dimension called Nega Earth (stands for Negative Earth) to exterminate element monsters (known as QEX) for the purpose of collecting chemicals of the periodic table which have been disappearing from Earth in recent decades.
In 2029, a large scale ground sinkage occurred in the Mediterranean Sea. Chemical elements such as oxygen, carbon, gold, molybdenum, and cobalt disappeared from the earth's crust suddenly. The human population was decreased by 90% in sixty years. Researchers found out that the disappeared elements were drained into a planet "Nega Earth", located in another dimension.
