Geng Geng had been an ordinary girl before her entry to the best high school in the province by chance. She doesn't like her life there until she meets Yu Huai, her seatmate - their names make up the word "Geng geng yu huai", meaning "Unforgettable memories". They don't like each other at the beginning, but soon they start to understand each other.

Due to profit-driven commercial scientific research by humans, it led to the emergence of retaliatory actions from a giant squid in the depths of the Antarctic against the Antarctic international scientific research station. Han Lian, a member of the Antarctic transportation team, gets involved in this disaster. In order to rescue Rosa and his teammate Qiangzi, he engages in a life-and-death struggle with the giant squid and ultimately manages to escape.