The 'Survival Cartoon Science Knowledge' series is a learning cartoon where students learn scientific knowledge through risky adventures. <Survival in the Underground World 1> is the adventure story of Geo, who went underground wearing a shrinking exploration suit. Through the process of the main characters fighting off attacks from all kinds of underground animals, we learn about the ecology and habits of living things and the importance of the underground ecosystem. You can experience upgraded fun, information, and vivid stories through friendly and dynamic pictures.

Geo and Myung-su go to a remote countryside at the request of Dr. Noe and meet Pui, an Indian girl who keeps an earthworm as a pet. Pui was developing an exploration suit that made his body smaller in order to study the underground! Suddenly, Geo and Myeong-su don the exploration suits made by Pui and go on an underground expedition. The underground world, which was thought to be quiet, is unexpectedly crowded with all kinds of creatures, and angry animals such as moles and ground squirrels attack Geo and his group... .